Update AUTHORS
Update AUTHORS

Added my information on line 56

Review URL: https://api.github.com/repos/google/traceur-compiler/issues/2067

Closes #2067.

google/traceur-compiler,google/traceur-compiler,arv/traceur-compiler,sebgod/traceur-compiler,johnjbarton/traceur-compiler,sebgod/traceur-compiler,johnjbarton/traceur-compiler,arv/traceur-compiler