Added information about custom gRPC install locations in README, bumped version

src/node/README.md

@@ -14,6 +14,12 @@ This requires `node` to be installed. If you instead have the `nodejs` executabl
  2. Follow the instructions in the `INSTALL` file in the root of that repository to install the C core library that this package depends on.
  3. Run `npm install`.
 
+If you install the gRPC C core library in a custom location, then you need to set some environment variables to install this library. The command will look like this:
+
+```sh
+CXXFLAGS=-I<custom location>/include LDFLAGS=-L<custom location> npm install [grpc]
+```
+
 ## Tests
 
 To run the test suite, simply run `npm test` in the install location.

src/node/package.json

 {
   "name": "grpc",
-  "version": "0.6.1",
+  "version": "0.6.2",
   "author": "Google Inc.",
   "description": "gRPC Library for Node",
   "homepage": "http://www.grpc.io/",