Update python2/koans/about_strings.py

Changed the 'con' to 'can' in the function name line 102.
Merge pull request #39 from robotsmack/patch-1

Update python2/koans/about_strings.py
Merge pull request #40 from brainstorm/master

Respect exit codes when there are koans failing
Reverting passing asserts
Merge pull request #41 from brainstorm/master
Enlightenment support for python2 at Travis-CI
Fixed running of contemplate_koans with 0 arguments. Made it so you multiple arguments run as one suite of tests
"Finished the koans"
Merge branch 'master' of https://github.com/brainstorm/python_koans
"Finished koans"