Images URL, list of synonyms

CHANGELOG

• Add list of detected synonyms for the summary.
• Add images url from Google Images

More options, bug fixes

CHANGELOG

• Add [#10] currently accepted canonical in output. Add option for
  for a short output.
• Add [#8] option to return result without synonyms.
• Add [#7] add documentation.
• Fix [#9] close DB connections in the end of Refs methods.

Functional bhlnames

Creates database, finds references in BHL for a name