fix travis syntax

.travis.yml

@@ -6,10 +6,11 @@ before_install:
  - wget -O cmake.sh https://cmake.org/files/v3.12/cmake-3.12.1-Linux-x86_64.sh 
  - sudo sh cmake.sh --skip-license --exclude-subdir --prefix=/usr/local
 
- script:
-  - mkdir build
-  - cd build
-  - cmake -DCMAKE_CXX_COMPILER=$BIN_PATH/clang++ -DCMAKE_INSTALL_PREFIX=./ ../
-  - cd test
-  - make
-  - ./unittest
+script:
+ - mkdir build
+ - cd build
+ - cmake -DCMAKE_CXX_COMPILER=$BIN_PATH/clang++ -DCMAKE_INSTALL_PREFIX=./ ../
+ - cd test
+ - make
+ - ./unittest
+