Filter out copying header files
Filter out copying plist files
Filter out warnings from the compiler

* Turn warning output on by default

Conflicts:
	lib/xcpretty/formatters/formatter.rb
Filter out shell command invocations in general

It is possible that this matching expression may be too general and match text
which is unrelated to the running commands, or even match user-created log
messages

Conflicts:
	lib/xcpretty/formatters/formatter.rb
	spec/xcpretty/parser_spec.rb