[Timber] Vim syntax file for Timber

I made a Timber syntax file by modifying the Haskell syntax file. I added all the keywords I was able to find in the documentation on timber-lang.organd in the examples files. I also added coloring of some useful words like “sec”, “millisec”, “timer”, etc. To install the syntax file, unpack the attached archive inside your ~/.vim directory. The archive contains two files: ftdetect/timber.vim and syntax/timber.vim. Should you have any suggestions for improvements, don't hesitate to contact me. Enjoy! Ivan