try to use msvc with cmake on windows

.travis.yml

@@ -1,8 +1,8 @@
 language: cpp
 dist: xenial
 
-compiler:
-  - clang
+# compiler:
+#  - clang
 #   - gcc
 
 os: osx

test/run.py

@@ -34,9 +34,9 @@ if osName == 'Linux':
 
 sanitizerFlags = sanitizersFlags[sanitizer]
 
-if osName == 'Windows':
-    os.environ['CC'] = 'clang-cl'
-    os.environ['CXX'] = 'clang-cl'
+# if osName == 'Windows':
+#     os.environ['CC'] = 'clang-cl'
+#     os.environ['CXX'] = 'clang-cl'
 
 cmakeCmd = 'cmake -DCMAKE_BUILD_TYPE=Debug {} {} ..'.format(generator, sanitizerFlags)
 print(cmakeCmd)