Bump version to 0.3 and README pip install

Author: ingmferrer

README.md

@@ -4,7 +4,7 @@ salesforce-python is an API wrapper for Sales written in Python
 
 ## Installing
 ```
-pip install git+git://github.com/GearPlug/salesforce-python.git
+pip install salesforce-python
 ```
 
 ## Usage

setup.py

@@ -1,7 +1,7 @@
 from setuptools import setup
 
 setup(name='salesforce-python',
-      version='0.2',
+      version='0.3',
       description='API wrapper for Salesforce written in Python',
       url='https://github.com/GearPlug/salesforce-python',
       author='Miguel Ferrer',