Please review commits to Forked version of master Branch

[bhapps]

@ImangazalievM below for your review/rejection/advice

Thank you for contributing to ReActiveAndroid. Before pressing the "Create Pull Request" button, please consider the following points:

Please give a description about what and why you are contributing, even if it's trivial.

• Added API Fuctionality for Transactions & Pagination with sample activites (and subsequent adapters, layouts, menus, values, manifest) within reactiveandroid\sample-app

• For review by repository owner

• Review at bhapps@b40e96c

Please include the issue list number(s) or other PR numbers in the description if you are contributing in response to those.

• Refer to Issue #42 for Pagination Functionality

• Refer to Issue/Enhancement #38 & Closed Issue #36 for Transaction Functionality

Please include a reasonable set of unit tests if you contribute new code or change an existing one.

• None added, but provided within reactiveandroid\sample-app