Merge pull request #19 from ahmedlawi92/master

Added class to sample codebase
User correct path to sources in tests
Search classes referenced in specs to find classes they import
Add tests for finding referenced classes
Added new classes used in tests
Renamed function, searched through imports to find only those used by classes in specs
Fixed tests for because of changes introduced by last commit
Allow existing files that aren't in base path to be used
Filter results based on used classes
Update tests for new class filtering
Make filtering classes optional
Update tests to test if classes are filtered
Merge pull request #20 from ahmedlawi92/findAllUsedClasses

Add option to filter results to use only classes found referenced by specs.