Updated demo for 1.5
updated gitignore
updated maven push gradle script
Removed apk 1.4.0
Prepared doc for 1.5.0
LIB: Changed versionCode
Demo: update demo 1.5.1
LIB: removed debug log and moved color divider background
Updated doc 1.5.1
Merge branch 'dev' of https://github.com/gabrielemariotti/changeloglib into dev