Add non-terminal echoing functionality
Add non-terminal echoing functionality

- `echo $(s)` -- prints $S_BIN_PATH to stdout
- `echo $(s -t)` -- prints $S_TEMPLATE_PATH to stdout
- `echo $(s blah)` -- prints path of "blah" script to stdout
- `echo $(s -t blah)` -- prints path of "blah" template to stdout

davesque/s,davesque/s,davesque/s,davesque/s