Improved bugs and added proj/datu/ellip names leading to much better test coverage (70-90% of the crs test cases)

pycrs/loader.py

@@ -1,3 +1,6 @@
+"""
+Convenience functions for loading from different sources.
+"""
 
 import json
 import urllib2
@@ -8,8 +11,6 @@ from . import parser
 # USER FUNCTIONS
 #################
 
-# convenience methods for loading from different sources
-
 def from_url(url, format=None):
     """
     Returns the crs object from a string interpreted as a specified format, located at a given url site.