modified arrays.xml, strings.xml, preference.xml to:
1. add new settings
2. re-organize overall settings
corrected typo in string constant ("Rhythm")
changed readme file to give more detail
merged Saumya's code for set/reset wallpaper
Merge branch 'master' of https://github.com/saumyakb/BetterU into prototype_cvj3
Merge branch 'master' into prototype_cvj3
Merge branch 'prototype_cvj3'