Add install requires & update to latest wagtail

requirements.txt

@@ -1,5 +1,5 @@
 django-countries==4.0
 django-extensions==1.7.5
 djangorestframework==3.5.4
-wagtail==1.7
+wagtail>=1.7
 

setup.py

@@ -85,7 +85,13 @@ setup(
         'longclaw',
     ],
     include_package_data=True,
-    install_requires=[],
+    install_requires=[
+        'django>=1.8',
+        'wagtail>=1.7',
+        'django-countries>=4.0',
+        'django-extensions>=1.7.5',
+        'djangorestframework>=3.5.4'
+    ],
     license="MIT",
     zip_safe=False,
     keywords='longclaw',