lib/baseURL.js
function getChar (bits) {
  var index = parseInt(bits,2);
  if (isNaN(index) || index < 0 || index > 63) throw new Error('baseURL#getChar: Need valid bitString');
  return ALPHABET[index];
}
function getChar (bits) {
  var index = parseInt(bits,2);
  if (isNaN(index) || index < 0 || index > 63) throw new Error('baseURL#getChar: Need valid bitString');
  return ALPHABET[index];
}
function getChar ( bits ) { var index = parseInt ( bits , 2 ) ; if ( isNaN ( index ) || index < 0 || index > 63 ) throw new Error ( 'baseURL#getChar: Need valid bitString' ) ; return ALPHABET [ index ] ; }
Get baseURL char from given 6bit bitstring
@param  {string} bits  6bit bitstring
@return {string}       baseURL char
Get baseURL char from given 6bit bitstring