Strip leading / from local path of directories
Strip leading / from local path of directories

Was reading system's filesystem root for directories instead of go
proc's cwd.   Bug was evidenced by "get /"  not being translated get
/index.html and also If you look at the generated static.go (or
whatever) file, all directories have 'local' starting with /.

Closes #24

mjibson/esc,mjibson/esc,mjibson/esc