.travis.yml in kurchatov-0.0.7.pre.3 vs .travis.yml in kurchatov-0.0.7.pre.4

@@ -1,9 +1,14 @@
-os: [linux, osx]
+os:
+  - linux
+  - osx
 
 language: 
-  - 'ruby'
+  - ruby
+
 rvm: 
-  - '1.9.3'
-  - '2.0.0'
-  - '2.1.0'
+  - 1.9.3
+  - 2.0.0
+  - 2.1.0
+  - 1.8.7
+
 script: "./tests/run.sh"