Merge pull request #4 from Microsoft/ci

update codecov upload token

appveyor.yml

@@ -4,7 +4,7 @@ environment:
   JAVA_HOME: "C:\\Program Files\\Java\\jdk1.8.0"
   PYTHON: "C:\\Python35"
   CODECOV_UPLOAD_TOKEN:
-    secure: 80IcEvO4OmyIeu2O4Yq7fKr4BV9p3M6zczwEAy2bL/H1CzypXF4PEpDGyACNTdX1
+    secure: oQzRyhqqs8c0TeJxPhCxk++H4plFaX6dWZ2I3Q/wtvpNIzNUn9nzPGJbxxjgW2Q7
 
 install:
   - cmd: python -m pip install codecov