Upgraded `textgrid.py`
Deprecated `get_dict.sh`

The CMU dictionary occasionally introduces errors in the form of vowel
phones without stress stress numbers. Consequently, I am deprecating the
`get_dict.sh` script; instead, you should just use the forked version of
`dictionary.txt` which I will now place in this directory.
Added a working English dictionary forked from the CMU one.
Dictionary, now with all phones legal and in-vocabulary
minor fixes for `textgrid.py`, and new `eval.py`
Removed reference to `get_dict.sh` in the tutorial.

Since there are a handful of errors (w.r.t. to stress numbers) in the
CMU dictionary, I have been also circulating a copy of CMU with the
appropriate fixes. `get_dict.sh` nukes this file, and so it'd be better
if people didn't use it, as per Gretchen's suggestion.
Erin's new take on the CMU dictionary
README added stuff about the IPA table
Merge branch 'master' of https://github.com/prosodylab/Prosodylab-Aligner

Conflicts:
	README.md
Merge pull request #1 from kylebgorman/master

upgrades to textgrid.py, deprecated get_dict.sh, day 1 hackathon updates