code: function removeLocalBranch(options) {
      assert.ok(options.branch, 'branch is mandatory');
  
      var args = [
        'branch',
        options.force ? '-D' : '-d',
        options.branch
      ];
  
      return git(args)
          .then(silent);
    }
docs: Removes a local branch
  
  @example
  var git = require('gitftw');
  
  //while in master...
  git.removeLocalBranch({
  branch: 'master'
  });
  
  @memberof git
  @type {command}
  
  @param {Object} options The options object. All its properties are {@link Resolvable}
  @param {Resolvable|String} options.branch The branch name
  @param {Resolvable|Boolean} [options.force] force the delete (-D)
  @param {callback} [cb] The execution callback result
  @returns {Promise} Promise Resolves with undefined