Fixed .gitignore and added gradle-wrapper.jar
Fixes #28. Should prevent rouge lecture items from aborting the lecture scanning process.
Preparing for Version 3.0.5
Release Version 3.0.5
Merge branch 'hotfix-3.0.5' into release

* hotfix-3.0.5:
  Release Version 3.0.5
  Preparing for Version 3.0.5
  Fixes #28. Should prevent rouge lecture items from aborting the lecture scanning process.
  Fixed .gitignore and added gradle-wrapper.jar

Conflicts:
	gradle.properties
	gradle/wrapper/gradle-wrapper.properties