[MERGE #5752 @dilijev] Fix README.md to point to ci2.dot.net for master CI badges.
[MERGE #5752 @dilijev] Fix README.md to point to ci2.dot.net for master CI badges.

Merge pull request #5752 from dilijev:fix-readme

Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore