added the option to only run individual specs via the "solo" tag
added handling for files w/ trailing text (fixes #48)

I still need to dig through the YAML specs a bit to understand exactly how this
is supposed to work. At least for now SafeYAML matches the reference
implementations (Syck and Psych) in this regard.
fixed pretty stupid bug where any blank lines would cause the result to be false :(
version bump
working on getting SafeYAML to load frontmatter OK
implemented more correct solution to handling YAML frontmatter (should fix #48)
tweaked test document for handling frontmatter
I guess it's more accurate to return true here
added mention of :default_mode to warning - closes #45
version bump
fixed handling of empty files (fixes #49)
better handling for empty files (see #49)
pulled SafeYAML.load into its own module (see #47)

This is so you can require safe_yaml/load without monkey-patching
the YAML module if you want.
typo
don't load syck_hack.rb in JRuby unless it's needed (fixes #50)
fik the build?
fixing 1.9.2/Psych combo
added JRuby versions to spec script
updated SafeToRubyVisitor based on Psych 2.0.0
seriously, why wouldn't I allow failures for jruby-head?