Replace str in file with groovy.

change_package.groovy

import groovy.io.FileType

def source = "import android.support.wearable"
def dest = "import ticwear.support.wearable"

def dir = new File("res")
dir.eachFileRecurse (FileType.FILES) { f ->
    def fileText = f.text
    fileText = (fileText =~ /${source}/).replaceAll(dest)
    f.write(fileText)
}