Squashed commit of the following:

commit c7457a841780dc2aa651bbf688478230b70a4183
Author: Renard Wellnitz <renard.wellnitz@googlemail.com>
Date:   Wed Nov 12 14:20:22 2014 +0100

    update read me

commit c6778d9347ca6701163045d79e1c0d41b03dab38
Merge: 12d060e 36f962b
Author: Renard Wellnitz <renard.wellnitz@googlemail.com>
Date:   Wed Nov 12 14:19:17 2014 +0100

    Merge branch 'master' into issue_73

commit 12d060eccf5ebdaf3a08fd76d140d72ee2b4c479
Author: Renard Wellnitz <renard.wellnitz@googlemail.com>
Date:   Wed Nov 12 14:15:57 2014 +0100

    remove ViewPagerIndicator since it is pulled in by gradle

commit 65738acb738607d6320be9748e5ab1d1f5ea3ad9
Author: Renard Wellnitz <renard.wellnitz@googlemail.com>
Date:   Wed Nov 12 14:13:50 2014 +0100

    update build files to use latest version of gradle and android build tools
do not ignore lint errors
updared submodule
add gradlewrapper and remove some lint errors