Add custom listener for infinite view pager & revise logic of infinite view pager listener
Modify the position passed to listener
Rename listener & parameter to correspond with its behaviour
Merge pull request #97 from KKBOX/dev_justin

Add custom listener for infinite view pager & revise logic of infinite view pager listener
Assign gradle build parameter with properties
Use support v4 in maven instead local jar
Merge pull request #100 from KKBOX/dev_justin

Use gradle properties file and adjust support library import
Merge pull request #107 from KKBOX/dev

merge dev