message: fixed json syntax
diff: "repository": "github:hosseinmoein/DataFrame",
  "author": "Hossein Moein <myseajune@aol.com>",
  "description": "C++ DataFrame -- R's and Pandas DataFrame in modern C++ using native types, continuous memory storage, and no virtual functions",
  - "license": "BSD 3-Clause",
  + "license": "BSD 3-Clause"
  }
  