Adjusted regex to support whitespace - it was a little restrictive previously, although there was absolutely no need for that.

See http://byronimo.lighthouseapp.com/projects/51787/tickets/41-diff-regex-lib_git_diffpy-cannot-handle-paths-with-spaces

Author: Byron

lib/git/diff.py

@@ -175,7 +175,7 @@ class Diff(object):
 	# precompiled regex
 	re_header = re.compile(r"""
 								#^diff[ ]--git
-									[ ]a/(?P<a_path>\S+)[ ]b/(?P<b_path>\S+)\n
+									[ ]a/(?P<a_path>.+?)[ ]b/(?P<b_path>.+?)\n
 								(?:^similarity[ ]index[ ](?P<similarity_index>\d+)%\n
 								   ^rename[ ]from[ ](?P<rename_from>\S+)\n
 								   ^rename[ ]to[ ](?P<rename_to>\S+)(?:\n|$))?

test/fixtures/diff_2

@@ -1,7 +1,7 @@
 diff --git a/lib/grit/commit.rb b/lib/grit/commit.rb
 index a093bb1db8e884cccf396b297259181d1caebed4..80fd3d527f269ecbd570b65b8e21fd85baedb6e9 100644
---- a/lib/grit/commit.rb
-+++ b/lib/grit/commit.rb
+--- a/lib/grit/com  mit.rb
++++ b/lib/grit/com  mit.rb
 @@ -156,12 +156,8 @@ module Grit
 
      def diffs