Merge pull request #7 from nov/master

nov's fork is the target of travis.
Merge pull request #8 from nov/master

JWE is now decodable without decryption
Merge pull request #10 from nov/master

now following JWE draft v17
.travis.yml - add PHP 5.5
Merge pull request #11 from sasezaki/patch-1

.travis.yml - add PHP 5.5
Merge pull request #12 from nov/master

PS256/384/512 support in JWS
Merge pull request #14 from nov/master

fix PS alg
add PHP 5.6 to .travis.yml
Merge pull request #15 from sasezaki/patch-2

add PHP 5.6 to .travis.yml
Merge pull request #17 from nov/master

v0.1.5 & readme re-format
Merge pull request #18 from nov/master

JWK implementation
more travis build target
define __toString as alias of toString

close #2