Add libuv example

[danimtb]

examples/libuv

[Akagi201]

and http-parser(just one .c and one .h file)

[MariadeAnton]

Noted - thanks @Akagi201!

[MariadeAnton]

@danimtb -> basics about the different tracks with libuv are explained here: http://docs.biicode.com/c++/dependencies.html#depending-on-a-block-track

[MariadeAnton]

Also Curl -> ask @lasote

[MariadeAnton]

Still missing: http-parser example (just one .c and one .h file)