code: function(rootPath, filePath, encoding) {
          return fs.readFileSync(path.resolve(rootPath, filePath), encoding || 'utf8');
      }
docs: Returns an object representing the content of a file.
  
  @param rootPath {string} the root path of the project
  @param filePath {string} the path of the file (relative to rootPath)
  @param encoding {string?} the encoding to use (is null if a default should be used)
  @return {object} an object representing the content.