Merge pull request #72 from vmarkovtsev/master

Add protobuf into dependencies

Author: juanjux

requirements.txt

@@ -1,3 +1,4 @@
 grpcio>=1.3,<=2.0
 grpcio-tools>=1.3,<2.0
 docker>=2.0,<3.0
+protobuf>=3.4.0,<4.0

setup.py

@@ -143,7 +143,7 @@ def main():
         packages=find_packages(),
         exclude=["bblfsh/test.py"],
         keywords=["babelfish", "uast"],
-        install_requires=["grpcio", "grpcio-tools", "docker"],
+        install_requires=["grpcio", "grpcio-tools", "docker", "protobuf>=3.4.0"],
         package_data={"": ["LICENSE", "README.md"]},
         ext_modules=[libuast_module],
         classifiers=[