foo.diff

diff --git a/gulpfile.js b/gulpfile.js
index cc55817..1df0002 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -8,7 +8,7 @@ var tape = require('gulp-tape');
 var shell = require('gulp-shell');
 
 var paths = {
-    'js_source': 'js/src/',
+    'js_source': 'js/graph/',
     'js_test': 'js/test/',
     'js_dist': 'dist/'
 };
diff --git a/js/graph/edge.js b/js/graph/edge.js
new file mode 100644
index 0000000..a9a16e9
--- /dev/null
+++ b/js/graph/edge.js
@@ -0,0 +1,25 @@
+var Edge = function(value, name) {
+    this.value = value;
+    this.name = name;
+
+    this.id = name + '-' + value;
+    this.nodes = {};
+};
+
+Edge.prototype = {
+    add: function(node1, node2) {
+        this.nodes = {};
+
+        this.nodes = {
+            head: node1,
+            tail: node2
+        };
+    },
+
+    areAdjacent: function(node1, node2) {
+        return this.nodes.head.id === node1.id &&
+            this.nodes.tail.id === node2.id;
+    }
+};
+
+module.exports = Edge;
\ No newline at end of file
diff --git a/js/graph/graph.js b/js/graph/graph.js
new file mode 100644
index 0000000..c34e3cd
--- /dev/null
+++ b/js/graph/graph.js
@@ -0,0 +1,58 @@
+var Node = require('./node');
+var Edge = require('./edge');
+
+var Graph = function() {
+    this.edges = [];
+    this.nodes = [];
+};
+
+Graph.prototype = {
+    addEdge: function(edge, head_node, tail_node) {
+        edge.add(head_node, tail_node);
+
+        this.nodes.push(head_node, tail_node);
+
+        head_node.addEdge(edge);
+        tail_node.addEdge(edge);
+
+        this.edges.push(edge);
+    },
+
+    areAdjacent: function(head_node, tail_node) {
+        return this.edges.some(function(edge) {
+            return edge.areAdjacent(head_node, tail_node);
+        });
+    },
+
+    // depth first search
+    walk: function(start_node, destination_node) {
+        var total_value = 0;
+
+        start_node.visited = true;
+
+        start_node.edges.forEach(function(edge) {
+            var node = edge.nodes.tail;
+
+            if (node.id === destination_node.id) {
+                total_value += edge.value;
+                return;
+            }
+
+            if (!node.visited) {
+                total_value = edge.value;
+
+                total_value += this.walk(node, destination_node);
+            }
+        }, this);
+
+        return total_value;
+    },
+
+    resetNodes: function() {
+        this.nodes.forEach(function(node) {
+            node.visited = false;
+        });
+    }
+};
+
+module.exports = Graph;
\ No newline at end of file
diff --git a/js/graph/node.js b/js/graph/node.js
new file mode 100644
index 0000000..9c03707
--- /dev/null
+++ b/js/graph/node.js
@@ -0,0 +1,13 @@
+var Node = function(id) {
+    this.id = id;
+    this.edges = [];
+    this.visited = false;
+};
+
+Node.prototype = {
+    addEdge: function(edge) {
+        this.edges.push(edge);
+    }
+};
+
+module.exports = Node;
\ No newline at end of file
diff --git a/js/maps/kerbol_system.js b/js/maps/kerbol_system.js
index 351a877..def8374 100644
--- a/js/maps/kerbol_system.js
+++ b/js/maps/kerbol_system.js
@@ -1,5 +1,5 @@
-var Node = require('../src/node');
-var Edge = require('../src/edge');
+var Node = require('../graph/node');
+var Edge = require('../graph/edge');
 
 var newNode = function(id) {
     var node = new Node();
diff --git a/js/maps/solar_system.js b/js/maps/solar_system.js
index c39442d..ffed717 100644
--- a/js/maps/solar_system.js
+++ b/js/maps/solar_system.js
@@ -1,5 +1,5 @@
-var Node = require('../src/node');
-var Edge = require('../src/edge');
+var Node = require('../graph/node');
+var Edge = require('../graph/edge');
 
 var newEdge = function(options) {
     return new Edge(options.deltav, options.name);
diff --git a/js/src/edge.js b/js/src/edge.js
deleted file mode 100644
index a9a16e9..0000000
--- a/js/src/edge.js
+++ /dev/null
@@ -1,25 +0,0 @@
-var Edge = function(value, name) {
-    this.value = value;
-    this.name = name;
-
-    this.id = name + '-' + value;
-    this.nodes = {};
-};
-
-Edge.prototype = {
-    add: function(node1, node2) {
-        this.nodes = {};
-
-        this.nodes = {
-            head: node1,
-            tail: node2
-        };
-    },
-
-    areAdjacent: function(node1, node2) {
-        return this.nodes.head.id === node1.id &&
-            this.nodes.tail.id === node2.id;
-    }
-};
-
-module.exports = Edge;
\ No newline at end of file
diff --git a/js/src/graph.js b/js/src/graph.js
deleted file mode 100644
index c34e3cd..0000000
--- a/js/src/graph.js
+++ /dev/null
@@ -1,58 +0,0 @@
-var Node = require('./node');
-var Edge = require('./edge');
-
-var Graph = function() {
-    this.edges = [];
-    this.nodes = [];
-};
-
-Graph.prototype = {
-    addEdge: function(edge, head_node, tail_node) {
-        edge.add(head_node, tail_node);
-
-        this.nodes.push(head_node, tail_node);
-
-        head_node.addEdge(edge);
-        tail_node.addEdge(edge);
-
-        this.edges.push(edge);
-    },
-
-    areAdjacent: function(head_node, tail_node) {
-        return this.edges.some(function(edge) {
-            return edge.areAdjacent(head_node, tail_node);
-        });
-    },
-
-    // depth first search
-    walk: function(start_node, destination_node) {
-        var total_value = 0;
-
-        start_node.visited = true;
-
-        start_node.edges.forEach(function(edge) {
-            var node = edge.nodes.tail;
-
-            if (node.id === destination_node.id) {
-                total_value += edge.value;
-                return;
-            }
-
-            if (!node.visited) {
-                total_value = edge.value;
-
-                total_value += this.walk(node, destination_node);
-            }
-        }, this);
-
-        return total_value;
-    },
-
-    resetNodes: function() {
-        this.nodes.forEach(function(node) {
-            node.visited = false;
-        });
-    }
-};
-
-module.exports = Graph;
\ No newline at end of file
diff --git a/js/src/node.js b/js/src/node.js
deleted file mode 100644
index 9c03707..0000000
--- a/js/src/node.js
+++ /dev/null
@@ -1,13 +0,0 @@
-var Node = function(id) {
-    this.id = id;
-    this.edges = [];
-    this.visited = false;
-};
-
-Node.prototype = {
-    addEdge: function(edge) {
-        this.edges.push(edge);
-    }
-};
-
-module.exports = Node;
\ No newline at end of file
diff --git a/js/test/graph.js b/js/test/graph.js
index 47e6618..42c4da0 100644
--- a/js/test/graph.js
+++ b/js/test/graph.js
@@ -1,7 +1,7 @@
 var describe = require('tape');
-var Graph = require('../src/graph');
-var Node = require('../src/node');
-var Edge = require('../src/edge');
+var Graph = require('../graph/graph');
+var Node = require('../graph/node');
+var Edge = require('../graph/edge');
 
 var solar_system = require('../maps/solar_system');
 var kerbol_system = require('../maps/kerbol_system');