Update README.md

Bumped latest stable release version in readme.
Fixed issue where specifying a socket to omit in Model.publish calls would cause the Model classroom to be used, instead of the specified room.
Merge pull request #903 from saghaulor/patch-1

Update README.md
Use `io` from the local namespace
Merge pull request #933 from drosen0/patch-2

Use `io` from the local namespace
Merged sails.io.js client update.