Removed all old references to 'Amber' from the project file.
Fixed an issue with PLPythonIntrospectionController importing the parse.py file.

The resource path is now accessed using the bundleForClass NSBundle method, rather than from the mainBundle.
The list of Python autocomplete variables now includes builtin functions and keywords.

In the parse.py get_variables() function, add the functions in __builtin__ and the keywords in keyword.kwlist to the returned list of assigned variables.
Now support the import from statement in Python file parsing.

In parse.py, added a visit_ImportFrom() method to the AssignParser NodeVisitor subclass. These import statements are processed the same as normal import statements.
Cleaned up several methods in PLPythonIntrospectionController.m
Updated test_parse.py to include the builtin and keyword variables in its test_variables() method.