Merge tag 'v0.1.2' into develop

Gemspec Changes part deux
Increments gem version to 0.1.3.pre
Adds Ruby version 2.0 and 1.9.3 to travis.yml
Updates gemspec required_ruby_version entry

Lowers requirement to be at least 1.9.3
Corrects code sample in README; Adds link to GitHub project in README
Changes references to 'FlatFile' to 'Flat::File'
Moves and expands main piece of documentation from Flat to Flat::File

* Expands the Reading Data and Filters sections
* Adds 'next release' text to Writing Data and Formatters
* Adds Layouts section with 'next release' text
Increments gem version to 0.1.3

This version contains documentation changes and additions, specifically on Reading Data and Filters.
Merge branch 'release/v0.1.3'