Merging Josh's readlines() and test suite fixes into master.

Merge remote-tracking branch 'upstream/master'
Merging new tests.

Merge remote-tracking branch 'upstream/master'
Merging most recent changes.

Merge remote-tracking branch 'upstream/master'
Merging most recent changes.

Merge remote-tracking branch 'upstream/master'
Fixed compiler to recognize/stop on all errors
Merge pull request #67 from kaitlinhuben/master

Fixed compiler to recognize/stop on all errors
Some code cleanup
Added "lang=None" recognition back in
Changed bad lang to new type of error
Merge pull request #68 from kaitlinhuben/master

Code cleanup, added lang=None back in, and changed bad lang to new kind of error
added new test files
Updated README
Merge pull request #69 from kaitlinhuben/master

Updated README
fixed typo
Merge remote-tracking branch 'upstream/master' into test
working hello world test
Merging changes on 5/3.

Merge remote-tracking branch 'upstream/master'
Added "None" to reserved words (Python)
Merge branch 'test', remote-tracking branch 'origin/test' into test
Fixed lang=None declaration