Merge pull request #3 from fommil/master

attempt to get ensime.el to byte compile
ugly workaround for https://github.com/ensime/ensime-server/issues/310
Merge pull request #4 from fommil/master

hack for https://github.com/ensime/ensime-server/issues/310
The server is now started with a dynamic sbt script

This takes a little longer to start, and forces the latest SNAPSHOT,
but it dramatically reduces the network load for updates.