Added Annotations and AnnotationText rspec files.

**Files**: `annotations_spec.rb` and `annotations_text_spec.rb`

**Issue**: Converted tests for Annotation and Annotation_Text models so that they could be used in rspec. Essentially, a line by line conversion was performed.

**Testing**: Rspec was run with the two new rspec files. The rspec tests passed with the following line: `157 examples, 0 failures`.