add requirements

requirements.txt

@@ -0,0 +1,19 @@
+mutagen>=1.41.1
+requests>=2.18.4
+scipy>=0.19.1
+httplib2>=0.11.3
+numpy>=1.13.3
+matplotlib>=2.1.1
+pyparsing>=2.2.2
+colorama>=0.3.9
+Send2Trash>=1.5.0
+stem>=1.6.0
+unidiff>=0.5.5
+psutil>=5.4.7
+setuptools>=39.0.1
+pymongo>=3.7.1
+pycrypto>=2.6.1
+beautifulsoup4>=4.6.3
+GitPython>=2.1.11
+google_api_python_client>=1.7.4
+scikit_learn>=0.20.0