Added init commands to ensure project is usable after clone

Signed-off-by: Byron Sanchez <bfs5030@gmail.com>
Updated node dependencies

Signed-off-by: Byron Sanchez <bfs5030@gmail.com>
Added checks for npm and grunt in npm_exec.sh.

Also fixed passing arguments to the locally packaged node module
binaries. Now arguments with spaces will be passed to the binaries.

Signed-off-by: Byron Sanchez <bfs5030@gmail.com>
Removed wintersmith directory in preparation for new dir structure

The wintersmith files and directories are going to be located in the
root project directory as opposed to being isolated in its own
wintersmith/ directory.

Signed-off-by: Byron Sanchez <bfs5030@gmail.com>