added: Readme

Author: adamcupial

README.md

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+# Lighthouse runner for python
+
+## Description
+This library is a simple wrapper around lighthouse-cli runner that runs the audit and parses a result in friendly manner.
+
+## Installation
+```bash
+pip install git+https://github.com/adamcupial/lighthouse-python.git#egg=lighthouse
+```
+
+## Usage
+
+```python
+from lighthouse import LighthouseRunner
+
+report = LighthouseRunner('https://webdesign-log.pl', form_factor='desktop', quiet=False).report
+assert report.score['performance'] > 0.5
+print(report.audits['performance'].failed)
+```
+
+report has 3 properties:
+
+- score: returns dict where keys are categories and values are scores (0 to 1)
+- timings: returns dict where keys are timings and values are timedelta objects
+- audits: dict where keys are categories and values are objects with passed and failed lists attached
+
+## Dependencies
+ - python 2.7+
+ - lighthouse installed