Update README.md

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Author: Anand Sanmukhani

README.md

@@ -1,5 +1,17 @@
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/4f6e655e936c4d54b838317bc4414017)](https://www.codacy.com/app/4n4nd/prometheus-connect?utm_source=github.com&utm_medium=referral&utm_content=4n4nd/prometheus-connect&utm_campaign=Badge_Grade)
 # prometheus-api-client
 
 A python wrapper for the prometheus http api
 
-Docs: https://prometheus-api-client-python.readthedocs.io/en/latest/source/prometheus_api_client.html#module-prometheus_api_client.prometheus_connect
+## Installation
+To install the latest release: 
+
+`pip install prometheus-api-client==0.0.2`
+
+To install directly from this branch:
+
+`pip install https://github.com/AICoE/prometheus-api-client-python/zipball/v0.0.2`
+
+## Documentation
+
+Docs: [https://prometheus-api-client-python.readthedocs.io/en/v0.0.2/source/prometheus_api_client.html]