Fix installation process and move testing to dev docs

Author: Elpedio Adoptante Jr

README.md

@@ -2,6 +2,10 @@ Stackify API for Python
 =======================
 
 ## Installation
+stackify-python can be installed through pip:
+```bash
+$ pip install -U stackify-api-python
+```
 
 **stackify-python-api** can be installed through pip:
 ```bash

docs/Developer.md

@@ -0,0 +1,11 @@
+## Testing
+Run the test suite with setuptools:
+```bash
+$ ./setup.py test
+```
+
+You can obtain a coverage report with nose:
+```bash
+$ ./setup nosetests --with-coverage --cover-package=stackify
+```
+You might need to install the `nose` and `coverage` packages.