[edit] Add Installation, Usage, How to test sections to README.md

Author: nwtgck

README.md

@@ -1,3 +1,49 @@
 # multi_svr - Multiple-targets Support Vector Regression
 
-[![Build Status](https://travis-ci.org/nwtgck/multi-svr-python.svg?branch=develop)](https://travis-ci.org/nwtgck/multi-svr-python) [![Coverage Status](https://coveralls.io/repos/github/nwtgck/multi-svr-python/badge.svg?branch=develop)](https://coveralls.io/github/nwtgck/multi-svr-python?branch=develop) 
+[![Build Status](https://travis-ci.org/nwtgck/multi-svr-python.svg?branch=develop)](https://travis-ci.org/nwtgck/multi-svr-python) [![Coverage Status](https://coveralls.io/repos/github/nwtgck/multi-svr-python/badge.svg?branch=develop)](https://coveralls.io/github/nwtgck/multi-svr-python?branch=develop)
+ 
+ 
+ ## Installation
+ 
+ ```bash
+ pip3 install git+https://github.com/nwtgck/multi-svr-python
+ ```
+ 
+ 
+ ## Usage
+ 
+ ```python
+X = [
+  [0, 0],
+  [0, 10],
+  [1, 10],
+  [1, 20],
+  [1, 30],
+  [1, 40]
+]
+
+y = [
+  [0, 0],
+  [0, 10],
+  [2, 10],
+  [2, 20],
+  [2, 30],
+  [2, 40]
+]
+
+#  Create SVR
+regressor = multi_svr.MutilSVR(kernel='linear')
+# Fit
+regressor.fit(X, y)
+# Predict
+pred_y = regressor.predict(X)
+# Calc errors
+errs = metrics.mean_squared_error(y, pred_y)
+ ```
+ 
+ ## How to test
+ 
+ ```bash
+ cd <this repo
+ python setup.py test
+ ```