Added unit test bootstrap
Add a basic test

Uses
[this](http://plugins.svn.wordpress.org/advanced-excerpt/tests/wp-test/lib/testcase.php)
test case class.
First 10 tests
Added 5 additional tests

Tests are now complete apart from an extensive shortcode test.
Added PHPdoc tags for tests
Removed bootstrap and added template

You should built your own path in the bootstrap file.
Added PHPdocumentation
Updated package and added phpdoc
Updated the phpdoc
Merge pull request #50 from Derkje-J/feature/unittests

Unit Tests props @Derkje-J  (delay by me)