Merge pull request #2310 from ipfs/docs/install-tips

add some tips for making dep installs go smoothly

README.md

@@ -83,6 +83,13 @@ $ cd $GOPATH/src/github.com/ipfs/go-ipfs
 $ make install
 ```
 
+Tip:
+
+If the `make install` hangs while fetching dependencies and if you are
+running a daemon locally, ensure that it is on at least version 0.4.0-dev. If
+you don't have a build that is new enough, run the `make install` with your
+daemon turned off and the deps will be fetched through the ipfs.io gateways.
+
 NOTES:
 
 * `git` is required in order for `go get` to fetch