Just piling on here, c3IDE & developer mode is the bestest!
My only wish is that it supported Mac :), that being said the author added a great feature, so I can have a node server on my Mac monitor/serve the c3IDE compiled files on my Parallels Windows VM which is running c3IDE.
It's really nice.
Also the c3IDE server is set up not to cache, so c3IDE plugin updates are available on C3 reload.
On the Mac side I am using nodemon/node/express as my server, which restarts on changes to my plugin dir, so it's also always up to date on C3 reload (no cache issues.)