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 #18 from kohana/3.3/feat/travis-module-build

Configure Koharness for standalone Travis build
Add travis build badges

[skip ci]
refs #4677 Added a configuration option to define default driver for Image library
Make the new default_driver configuration backwards-compatible

Changed the default config value to NULL and added documentation
of recommended and deprecated ways to configure which driver
will be used.
Merge pull request #20 from kohana/3.3/feat/driver-config

Added a configuration option to define default driver for Image module
add jpe extension as IMAGETYPE_JPEG
Merge 3.3/release/3.3.3 into 3.3/master