added .gitignore
merged mgage/master
Merge branch 'master' of https://github.com/mgage/webwork2
Added code to create, edit, and assign achievements to students
Take 2: committing new files needed for achievements
Take 3: One last file
Fixed Facebook Integration
Merge pull request #4 from mgage/master

updates from Grant He
Removed dependency of code on Freeze Thaw.  Now uses Storable.
Merge remote-tracking branch 'mgage/master' into mgage_merge

Conflicts:
	conf/global.conf.dist
	lib/WeBWorK/ContentGenerator.pm
	lib/WeBWorK/ContentGenerator/Problem.pm
	lib/WeBWorK/URLPath.pm
Fixed borked URLPaths merge
Fixed bug where students cant solve problems if they have no achievement data
Revisions to accommodate variations in parameters
passed by various LMSs and to improve coordination
with Login.pm and Logout.pm.
Add the script ww_purge_old_nonces for purging old nonces
to the webwork2/bin directory.
Added mathjax as submodule
Added mathjax as a git submodule. Users must still do 'git submodule init' and 'git submodule update' from webwork2/ to get MathJax code
Merge pull request #5 from mgage/master

merged webwork (alpha 2.5.1)
git commit -a
Merge pull request #11 from goehle/master

MathAchievement pull request
documentation start…. and testing the dev branch