Fixed bigram sample result
Merge pull request #120 from takei-yuya/fix_bigram_example_result

Fixed bigram sample result
Merge branch 'release/0.5.2'
Fixed description of TYPE
add missing messages in API reference (refs #92, #117)
Merge pull request #125 from jubatus/fix-missing-messages

(hotfix) add missing messages in API reference (refs #92, #117)
Merge pull request #124 from rimms/fixed_save_file_name

(hotfix) Fixed save file name
Merge branch 'master' into develop