tabs to spaces

[rococodogs]

This updates all files (@ 11838f0) to use 2 spaces rather than tabs.

Closes #27

[rococodogs]

bash lines used (via StackOverflow):

$ find ./src -name '*.[js][cs]*' ! -type d -exec bash -c 'expand -t 2 "$0" > /tmp/exp && mv /tmp/exp "$0"' {} \;
$ find ./lib -name '*.[js][cs]*' ! -type d -exec bash -c 'expand -t 2 "$0" > /tmp/exp && mv /tmp/exp "$0"' {} \;
$ find ./ -name '*.[js][cs]*' ! -type d -d 1 -exec bash -c 'expand -t 2 "$0" > /tmp/exp && mv /tmp/exp "$0"' {} \;