Create library_circularprogressbutton_strings.xml

This 'library_circularprogressbutton_strings.xml' file is a definition-file for this library https://github.com/mikepenz/AboutLibraries
Added Maven Badge
Added Android Arsenal Badge
Added `cpb_textProgress`attribute to display text in progress mode
Gradle build script update:
- Intellij IDEA 13 uses gradle 0.10.+
- Android Studio uses gradle 0.12.+
Merge pull request #39 from krossovochkin/dev

Added 'library_circularprogressbutton_strings.xml' file for AboutLibraries support.
1.1.1
Added Getters and Setters for idle, complete and error text
Added `cpb_textProgress`attribute to display text in progress mode
Gradle build script update: Intellij IDEA 13 uses gradle 0.10.+ / Android Studio uses gradle 0.12.+
Added Android Arsenal, Maven Badges
Merge branch 'dev'
1.1.2
Gradle build script update
Merge branch 'dev'
Updated snapshot dependencies
Merge remote-tracking branch 'origin/dev' into dev
Merge branch 'dev'