Added more customization and Update readme 1.4

It maybe easiest to look at individual commits. I would love to see this get to master, so question everything. The way we format code is a little bit different so I can change any formatting. 

Also I noticed that Italian, German and Traditional Chinese translations do not appear in master. Not sure where they went...

- Removed unnecessary dependency in library. Updated to latest versions of Gradle
- Refactored building ShowDialogActions from the builder to a Factory. This let's impletmenters of the app to easily hijack the first Action.
- Added the ablity to customize the email subject and email message. Added to Sample an example on a customized email message.
- Updated readme and versions to 1.4 - I think I said I would do this like 6 months ago :-)