Finished setting up the testing Environment on Travis

Activated landing-page plugin on travis:

Added two more tests, 1 test to run a function within landing plage plugin code to assert the plugin is activated.  Second test echo's out text on travis to show the plugin is activated and can be called on travis.

Will write up a google doc describing how to add and do tests:

changes:

- Added tests to check landing page plugin is active, fixes #92