cleaned up readme (spelling and example code)
Make server/client distinction environment-agnostic
Merge pull request #88 from kumavis/master

Make server/client distinction environment-agnostic
0.19.0 - add isClient from #88
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'wraithan/readme-cleanup'

https://github.com/maxogden/voxel-engine/pull/87
Update example defaults in readme