Free version requirements

Tests should be run against the latest versions of libraries. Initially
there was going to be a lower bound on requirements but it is unlikely
that a situation will arise where a version is too out of date and can
be added back then rather than having arbitrary minimums.

dev-requirements.txt

@@ -1,2 +1,2 @@
-markment==0.2.14
-steadymark==0.4.5
+markment
+steadymark

requirements.txt

@@ -1,9 +1,9 @@
-coverage==3.5.3
-httplib2==0.7.6
-mock==1.0.1
-nose==1.2.1
-requests==1.1.0
-tornado==2.4
-tox==1.4.2
-sure==1.2.2
-urllib3==1.7.1
+coverage
+httplib2
+mock
+nose
+requests
+tornado
+tox
+sure
+urllib3

tests/functional/test_requests.py

@@ -36,6 +36,7 @@ from httpretty import HTTPretty, httprettified
 from httpretty.core import decode_utf8
 
 from base import FIXTURE_FILE, use_tornado_server
+from tornado import version as tornado_version
 
 try:
     xrange = xrange
@@ -698,7 +699,7 @@ def test_recording_calls():
     response['response'].should.have.key("status").being.equal(200)
     response['response'].should.have.key("body").being.an(unicode)
     response['response'].should.have.key("headers").being.a(dict)
-    response['response']["headers"].should.have.key("server").being.equal("TornadoServer/2.4")
+    response['response']["headers"].should.have.key("server").being.equal("TornadoServer/" + tornado_version)
 
 
 def test_playing_calls():