Refactoring
Merge remote-tracking branch 'origin/master'

Conflicts:
	Polygon/src/main/java/com/global/training/polygon/utils/PreferencesUtils.java
Begin adding xml parser
Merge remote-tracking branch 'origin/master'

Conflicts:
	Polygon/src/main/java/com/global/training/polygon/ui/MainActivity.java
Can't parse xml
Get total spend  time by time interval
For push
Merge with remote master and push local changes