Use my fork of travis-racket

.travis.yml

@@ -15,11 +15,11 @@ matrix:
   fast_finish: true
 
 before_install:
-  - git clone https://github.com/greghendershott/travis-racket.git
+  - git clone https://github.com/mbutterick/travis-racket.git
   - cat travis-racket/install-racket.sh | bash # pipe to bash not sh!
   - export PATH="${RACKET_DIR}/bin:${PATH}" #install-racket.sh can't set for us
 
 script:
  - cd ..   # Travis did a cd into the dir. Back up, for the next:
  - raco pkg install --deps search-auto --link txexpr
- - raco test -p txexpr
+ - raco test -p txexpr