small refactor of speech bubble
Merge pull request #42 from steffanc/speech-bubble-refactor

small refactor of speech bubble
Merge pull request #37 from rogerhu/colors_xml

Expose RGB colors -- black, dark blue, light blue, and white.
Add Roboto font + styles.

Using https://github.com/mafshin/CustomTextView.

Move to views.  Add a Typefaces HashMap class that caches instances of Typefaces to avoid memory leaks.

Change around style names.