Log Message:
www/nsm: Update to version 2.0.1

Changelog picked from https://github.com/nifty-site-manager/nsm/releases:

Nift (aka nsm) v2.0.1
* fixed bug when cloning a website repository from an empty directory
  (and any other similar bugs from using remove_path where remove_file
  is more appropriate, ie. when creating temporary text files)

Nift (aka nsm) v2.0
* changed @inputcontent to @content()
* changed @inputraw(file-path) to @input{raw}(file-path)
* addded if-exists/raw option to @input(file-path) and @content()
* added file/name options to @pathto
* changed @userin(msg) to @in(msg) and @userfilein(msg) to @in{from-file}(msg)
* added if-exists/inject/raw/content options to @script/@System
* changed from using @[varname] and @{varname} to @[varname] and
  @<varname> when printing variables
* changed to @funcname{options}(params) for function call syntax
* changed from using * option to parse params to {!p} option to
  NOT parse function name, options and params
* changed from using ^ option to not backup scripts to {!bs} option
* added read_params
* fixup up read_def and read_func_name
* fixed multi-line comments