Updated Readme and version

Author: svishi

README.md

@@ -12,7 +12,15 @@ Websocket connections are handled automatically with the library
 
 This module is installed via pip:
 
-`pip install upstox`
+```
+pip install upstox
+```
+
+To force upgrade existing installations:
+```
+pip uninstall upstox
+pip --no-cache-dir install --upgrade upstox
+```
 
 ### Prerequisites
 

setup.py

@@ -2,7 +2,7 @@
 setup(
   name = 'upstox',
   packages = ['upstox_api'],
-  version = '1.5',
+  version = '1.5.1',
   include_package_data=True,
   description = 'Official Python library for Upstox APIs',
   author = 'Upstox Development Team',