Configure standalone travis build

Adds and configures kohana/koharness to build a skeleton Kohana
application and then uses that environment to run the unit tests
on travis (and locally, if required).

Continues kohana/kohana#50
Disable IRC notifications for kohana builds
Merge pull request #20 from kohana/3.3/feat/travis-module-build

Configure Koharness for standalone Travis build
Add build status badges to the README

The readme itself needs to be redone, logged as #22.

[skip ci] - just a doc change
Update travis, koharness and composer configuration for 3.4 series
Merge pull request #23 from kohana/3.4/feat/travis-module-builds

Add standalone build for 3.4 series