Remove Gemfile.lock from the repository.
Ignore Gemfile.lock.
Merge branch 'ignore-gemfile-lock'
Add the Scorm2004::Manifest::DecimalNode module.
Fix the to_hash bug.

Scorm2004::Manifest::Manifest#to_hash had ignored the
<imsss:minNormalizedMeasure> element as of this fix.
Do not specify the bundler's version.
Merge branch 'decimal-node-fix'
Version bump to 1.2.1