get app ready for heroku

requirements.txt

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+appdirs==1.4.0
+boto3==1.4.4
+botocore==1.5.7
+Django==1.10.5
+django-cleanup==0.4.2
+django-stdimage==2.4.1
+django-storages==1.5.2
+docutils==0.13.1
+futures==3.0.5
+gunicorn==19.6.0
+jmespath==0.9.1
+oauthlib==2.0.1
+olefile==0.44
+packaging==16.8
+Pillow==4.0.0
+progressbar2==3.12.0
+psycopg2==2.6.2
+PyJWT==1.4.2
+pyparsing==2.1.10
+python-dateutil==2.6.0
+python-openid==2.2.5
+python-utils==2.0.1
+requests==2.13.0
+requests-oauthlib==0.7.0
+s3transfer==0.1.10
+six==1.10.0
+social-auth-app-django==1.0.1
+social-auth-core==1.1.0
+whitenoise==3.3.0