If somebody forgets to specify an option, NullPointerException is thrown

[searchivarius]

If a user forgets to specify an option (or equivalently accidentally inserts an empty line after options: | ), a NullPointerException is thrown. This happens right here:

https://github.com/oaqa/uima-ecd/blob/master/src/main/java/edu/cmu/lti/oaqa/ecd/phase/BasePhaseLoader.java#L74

We need to check if options are empty and to generate a friendlier exception message.