The remote? method should allow for files with http in their names

[hlascelles]

If a filename has an http(s) in the name it is mistaken for a remote:

# filename: /tmp/movie_of_http_webpage.mov

# Run:

     Failure/Error: response = http.request_head(url.request_uri)
     
     NoMethodError:
       undefined method `request_uri' for #<URI::Generic:0x00005640e7574d78>

The search for http(s) should be at the start of the string.

[hlascelles]

@streamio Do you need any more information on this PR?