Updated README.

README.rst

@@ -30,8 +30,28 @@ Features
 
 * TODO
 
+
+Installation
+------------
+* Use the pip-Installer:
+
+    pip install git+https://danschef@gitext.gfz-potsdam.de/danschef/py_tools_ds.git   # for HTTPS authentification
+
+    pip install git+git@gitext.gfz-potsdam.de:danschef/py_tools_ds.git   # for SSH-Key authentification
+
+
+* Or clone the repository via GIT and update the PATH environment variable:
+
+    cd /your/installation/folder
+
+    git clone https://danschef@gitext.gfz-potsdam.de/danschef/py_tools_ds.git
+
+    PATH=$PATH:~/path/to/your/installation/folder/py_tools_ds
+
+
+
 Credits
----------
+-------
 
 This package was created with Cookiecutter_ and the `audreyr/cookiecutter-pypackage`_ project template.