Rename readme.txt to readme.md
Merge pull request #6 from allanhortle/patch-1

Rename readme.txt to readme.md
Update readme.md

Updated version # and some minor formatting
Added call to Commit (save) during Terminate

scorm.save() wasn't invoking Commit() after setting exit value and before invoking Terminate(). This could lead to exit value not being properly persisted in the database.
Replaced all tabs with spaces