Documented dependencies and how to install them

Rely on virtualenv because it seems to be a de facto standard.

.gitignore

+# virtualenv
+/bin/
+/include/
+/lib/
+/pyvenv.cfg
+
+# Generated files
+*.pyc

README.md

@@ -10,3 +10,41 @@ a password change portal which enables users to
 change their passwords in IPA, after having their
 credentials verified by SUPR.
 
+# Development
+
+##  Dependencies
+
+- python2
+- python-virtualenv
+- openldap@2.4
+- cyrus-sasl
+
+In addition, development libraries for python2 are necessary.
+
+## Virtualenv
+
+The development tooling are reliant on a tool called virtualenv, which
+creates links to a installed version of python and also allows for
+installing packages local to the project.
+
+First create the virtual environment:
+
+```sh
+virtualenv -p python2 .
+```
+
+In order to enable it run the shell appropriate script found in the
+newly created bin directory, for example:
+
+```sh
+source bin/activate
+```
+
+## Installing python dependencies
+
+To install python dependencies have to be installed. Make sure that
+you have ran the script in bin/activate first.
+
+```sh
+$ python -m pip install -r requirements.txt
+```

requirements.txt

+python-ldap
+requests