Set ByteCompile on installation (#151)
Set ByteCompile on installation (#151)

* Set ByteCompile on installation

At UseR!2017 @csgillespie emphasized the importance of adding the BytCompile flag to packages. It is a an easy way to increase performance of the package. See [Efficient R Programming](https://csgillespie.github.io/efficientR/7-4-the-byte-compiler.html) for reference.

* Removed stray newlines

trestletech/rapier,trestletech/rapier,trestletech/rapier