Git generate numeric version of branch

http://programmers.stackexchange.com/questions/141973/how-do-you-achieve-a-numeric-versioning-scheme-with-git

Use tags to mark commits with version numbers:

git tag -a v2.5 -m 'Version 2.5'
Push tags upstream—this is not done by default:

git push --tags
Then use the describe command:

git describe --tags --long
This gives you a string of the format:

v2.5-0-deadbeef
^    ^ ^
|    | |
|    | SHA of HEAD
|    |
|    number of commits since last tag
|
last tag