ant: Add ant build logic for sphinx documentation
travis: Use ant to build documentation
travis: Install ant-contrib
travis: Install ant-optional
ant: Move taskdef to rules.xml
travis: Explicitly set CLASSPATH
ant: Add linkcheck targets
README: Document ant usage
Capitalize MATLAB across the page
Add top-level link to the Training examples
Explicit the requirements for an unsecure client

To be able to create an unsecure client, a valid session needs to be instantiated first
Add quick description of some of the option when retrieving annotations

Descripe include, exclude and owner parameter/key values
Implement Helen's rewording suggestion
Merge pull request #744 from rleigh-dundee/ant-build

Use ant to build sphinx docs
Removing 'only works for UNIX' comment from README
Merge pull request #747 from hflynn/readme-fix

Removing build commands 'only work for UNIX' from README
ant: Set SOURCE_BRANCH and OMERO_RELEASE using omero.shortversion
travis: Hardcode version for ant testing
Allow zero-length environment variables
ant: Support API doc generation