Commented in some code having to do with ViewRenderers, changed a couple interface names in the comments
Allow construction of primitive without descriptor
Minor changes to Polygon so errors are not thrown when checking for fills
Changed for loop to allow for javascript generation
Added check for a null
Fixed bug in pubspec Yaml
Changed naming of files to match Dart naming conventions
Changing name of package to lower case
Few file names didn't get changed correctly
Merge pull request #2 from TheNetBird/master

Usability updates