Significantly improved amstrad2unix
Significantly improved amstrad2unix

1) Document if no arguments given.

2) Strip all non-printable ASCII characters as per http://alvinalexander.com/blog/post/linux-unix/how-remove-non-printable-ascii-characters-file-unix

owainkenwayucl/utils,owainkenwayucl/utils,owainkenwayucl/utils