DynamicType Classes had a missing extention when added to Jar

Used the toJar method and noticed when I added the newly created Jar to my project, the classes inside were not loaded unless I added the .class extension.
Where did that paren go?
Merge pull request #7 from ultimefrisbee/master

Good catch, thanks. The same mistake is found for the jar injection. I adopted the test cases for this in the following commit.