Merge pull request #59 from seomoz/mac_10_10

Fix mac version comparison in setup.py for 10.10

Author: buriy

setup.py

@@ -6,7 +6,8 @@
 if sys.platform == 'darwin':
     import platform
     mac_ver = platform.mac_ver()[0]
-    if mac_ver < '10.9':
+    mac_ver_no = int(mac_ver.split('.')[1])
+    if mac_ver_no < 9:
         print "Using lxml<2.4"
         lxml_requirement = "lxml<2.4"