Moves requests to main requirements. Also upgrades to 1.0.3

Moving to main requirements, since zipline will not run without
the treasury and benchmark data that we requests to fetch.

Upgrade is to keep current with latest release.

etc/requirements.txt

@@ -14,3 +14,6 @@ numpy==1.6.2
 pandas==0.10.0
 python-dateutil==2.1
 six==1.2.0
+
+# For fetching remote data
+requests==1.0.3

etc/requirements_dev.txt

@@ -8,9 +8,6 @@ nose-parameterized==0.1
 nosexcover==1.0.7
 coverage==3.5.3
 
-# Fetching sample data
-requests==1.0.0
-
 # Linting
 
 flake8==1.6.2