update app version to 0.6 - 6

update app version to 0.5 - 5

added firebase analytics & crashlytics

Update versoin code to 3 and version name to 0.3

Merge pull request #3 from amanshuraikwar/bugfix/add-debuggable-flag

Add debuggable false to release app

Merge pull request #1 from amanshuraikwar/proguard-rules

Proguard rules