Begin work on rest endpoint

This branch is beginning the work on the rest endpoint outlined at #24. This adds a new flask rest endpoint that will be used to work with the scraping cluster, and interact with the kafka api.

The work will reside in `/rest` and will eventually have both offline test, online tests, and a new section of documentation. Notable new files here:

* rest_service.py - the rest endpoint code
* settings.py - rest service settings
* requirements.txt - the bare minimum requirements to run the rest service

requirements.txt

@@ -7,6 +7,7 @@ coverage==4.0.3
 cryptography==1.3.4
 cssselect==0.9.1
 enum34==1.1.6
+Flask==0.11
 funcsigs==1.0.2
 future==0.15.2
 idna==2.1

rest/.coveragerc

@@ -0,0 +1,4 @@
+[report]
+omit=
+  *settings.py
+  tests/*.py

rest/requirements.txt

@@ -0,0 +1,21 @@
+click==6.6
+ConcurrentLogHandler==0.9.1
+Flask==0.11
+funcsigs==1.0.2
+future==0.15.2
+itsdangerous==0.24
+Jinja2==2.8
+kafka-python==1.3.1
+kazoo==2.2.1
+MarkupSafe==0.23
+mock==2.0.0
+nose==1.3.7
+pbr==1.10.0
+python-json-logger==0.1.5
+redis==2.10.5
+retrying==1.3.3
+scutils==1.2.0.dev4
+six==1.10.0
+testfixtures==4.11.0
+ujson==1.35
+Werkzeug==0.11.11