Relaxed version requirements

requirements.txt

@@ -5,15 +5,15 @@ django-debug-toolbar>=1.6
 django-filter==0.15.3
 django-rest-swagger==0.3.10
 django-tables2>=1.2.5
-djangorestframework==3.4.3
-graphviz==0.4.10
-Markdown==2.6.7
+djangorestframework>=3.5.0
+graphviz>=0.4.10
+Markdown>=2.6.7
 natsort>=5.0.0
 ncclient==0.5.2
 netaddr==0.7.18
-paramiko==2.0.0
-psycopg2==2.6.1
-py-gfm==0.1.3
-pycrypto==2.6.1
+paramiko>=2.0.0
+psycopg2>=2.6.1
+py-gfm>=0.1.3
+pycrypto>=2.6.1
 sqlparse>=0.2
-xmltodict==0.10.2
+xmltodict>=0.10.2