Increment version to 0.3.0.

Author: jianli

setup.py

@@ -1,10 +1,9 @@
 from setuptools import find_packages
 from setuptools import setup
 
-
 setup(
     name='git-get-merge',
-    version='0.2.1',
+    version='0.3.0',
     url='http://github.com/jianli/git-get-merge',
     description='A git command to find the merge that introduced a given commit.',
     packages=find_packages('.'),