Remove unused dependencies.
Change dependency from project to maven.
Revert credentials
Update README.md
Update README.md
Update README.md

updated the paths
Update README.md

updated the links
Update README.md
Update OpenIabHelper.java
Merge pull request #302 from onepf/update_dependencies

Remove unused dependencies.
Merge pull request #310 from ruimateus/master

Aptoide Integration
fixed wrong code
#313
Fix internal fields visibility; Introduce <> operator; Allow concurrent Inventory modifications
Update Amazon billing
Remove using Fortumo.
Remove Fortumo jar.
Remove code for cut Fortumo using.
Remove code for cut Fortumo using.
Remove description  "Work with multiple build variant"
Remove Fortumo code from samples.