Add a dependency on Requests

And on Responses for mocking Requests calls in tests.

dev-requirements.txt

@@ -10,6 +10,7 @@ flake8-import-order
 
 # Mock dependencies in tests
 mock
+responses
 
 # Test runners
 pytest

docs/changelog.rst

@@ -7,6 +7,11 @@ This changelog is used to track all major changes to Mopidy.
 v1.1.0 (UNRELEASED)
 ===================
 
+Dependencies
+------------
+
+- Mopidy now requires Requests.
+
 Core API
 --------
 

setup.py

@@ -24,8 +24,9 @@ setup(
     zip_safe=False,
     include_package_data=True,
     install_requires=[
-        'setuptools',
         'Pykka >= 1.1',
+        'requests',
+        'setuptools',
         'tornado >= 2.3',
     ],
     extras_require={'http': []},

tox.ini

@@ -15,6 +15,7 @@ deps =
     pytest
     pytest-cov
     pytest-xdist
+    responses
 
 [testenv:py27-tornado23]
 commands = py.test tests/http