Merge pull request #1702 from mbauhardt/copyfile

a plugin (function) which copies the content of a file into the clipboar...

plugins/copyfile/copyfile.plugin.zsh

+function copyfile {
+  [[ "$#" != 1 ]] && return 1
+  local file_to_copy=$1
+  cat $file_to_copy | pbcopy
+}