Merge pull request #14 from OldSneerJaw/dev

Hide keyboard when launching set timer view
Merge pull request #17 from OldSneerJaw/dev

Cancel countdown timer on pause
Merge pull request #19 from OldSneerJaw/dev

Timer field values always saved on submit
Replaced the license file with the full text of Apache License 2.0
Added launcher icons generated by Android Asset Studio (http://android-ui-utils.googlecode.com/hg/asset-studio/dist/index.html)