Parallelizing the build

Author: Justin Wetherell

.travis.yml

@@ -16,15 +16,16 @@ jdk:
   - openjdk7
   - openjdk6
 
-env:
-  - TEST_SUITE=run_tests
-  - TEST_SUITE=mathematics
-  - TEST_SUITE=numbers
-  - TEST_SUITE=search
-  - TEST_SUITE=sequences
-  - TEST_SUITE=strings
-  - TEST_SUITE=data_structures
-  - TEST_SUITE=sorts
-
 script: "bundle exec rake test:$TEST_SUITE"
 
+env:
+  matrix:
+    - TEST_SUITE=run_tests
+    - TEST_SUITE=mathematics
+    - TEST_SUITE=numbers
+    - TEST_SUITE=search
+    - TEST_SUITE=sequences
+    - TEST_SUITE=strings
+    - TEST_SUITE=data_structures
+    - TEST_SUITE=sorts
+