Add dev & exe pip-requirements files.

requirements/dev.pip

@@ -0,0 +1,17 @@
+## Pip-dependencies for developing the project.
+#
+# Install it with:
+#   pip install -r requirements/dev.pip
+
+-r exe.pip
+
+pip>6
+setuptools
+setuptools-git>=0.3
+wheel
+pytest
+webtest
+mock;           python_version < '3'
+gevent>=1.1b4;  python_version >= '3'
+twine>=1.6.0
+

requirements/exe.pip

@@ -0,0 +1,7 @@
+## Pip-dependencies for installing and running the project.
+##  from: https://caremad.io/blog/setup-vs-requirement/
+#
+# Install it with:
+#   pip install -r requirements/exe.pip
+
+-e .