Update README.md
Close
1) Fetch the desired protobuf version and copy it in a folder `new_proto` under
`third_party/protobuf`.
2) Bazel uses upstream protobuf from source, except for java, as we currently don't
-build protobuf java when bootstrapping bazel. So instead we use already build jars.
+build protobuf java when bootstrapping bazel. So instead we use pre-built jars.
So build the java proto library from source and in case you cloned an upstream version
of protobuf, remove the .git folders:
```
