Add addinstance capability
Update docs to include find for using OS X
typo fixed
Fix to defaults
Merge pull request #3 from jeremyno/master

Usability updates
Merge pull request #4 from tmuras/master

Correct definition of newmodule_grade_item_update() function
Merge pull request #5 from tmuras/master

Add initial template for grade.php with simplest possible implementation.
Update README.txt
Merge pull request #6 from s4muel/patch-1

Update README.txt
Merge pull request #7 from tmuras/master

Be default support FEATURE_SHOW_DESCRIPTION.