Add dependencies

tracim/setup.py

@@ -41,6 +41,10 @@ install_requires = [
     'rq==0.7.1',
     'filedepot>=0.5.0',
     'preview-generator',
+    'beautifulsoup4',
+    'markdown',
+    'email_reply_parser',
+    'requests',
 ]
 
 setup(