Execution example:

tokenize 'TokenMecab("target_class", "-名詞/非自立", "target_class", "-名詞/接尾/人名", "target_class", "名詞", "include_reading", true)' '彼の名前は山田さんのはずです。'
# [
#   [
#     0,
#     1337566253.89858,
#     0.000355720520019531
#   ],
#   [
#     {
#       "value": "彼",
#       "position": 0,
#       "force_prefix": false,
#       "force_prefix_search": false,
#       "metadata": {
#         "reading": "カレ"
#       }
#     },
#     {
#       "value": "名前",
#       "position": 1,
#       "force_prefix": false,
#       "force_prefix_search": false,
#       "metadata": {
#         "reading": "ナマエ"
#       }
#     },
#     {
#       "value": "山田",
#       "position": 2,
#       "force_prefix": false,
#       "force_prefix_search": false,
#       "metadata": {
#         "reading": "ヤマダ"
#       }
#     }
#   ]
# ]
normalize   'NormalizerNFKC("unify_to_romaji", true)'   "カレ"   WITH_TYPES
# [
#   [
#     0,
#     1337566253.89858,
#     0.000355720520019531
#   ],
#   {
#     "normalized": "kare",
#     "types": [
#       "alpha",
#       "alpha",
#       "alpha",
#       "alpha",
#       "null"
#     ],
#     "checks": [
#
#     ]
#   }
# ]
normalize   'NormalizerNFKC("unify_to_romaji", true)'   "ナマエ"   WITH_TYPES
# [
#   [
#     0,
#     1337566253.89858,
#     0.000355720520019531
#   ],
#   {
#     "normalized": "namae",
#     "types": [
#       "alpha",
#       "alpha",
#       "alpha",
#       "alpha",
#       "alpha",
#       "null"
#     ],
#     "checks": [
#
#     ]
#   }
# ]
normalize   'NormalizerNFKC("unify_to_romaji", true)'   "ヤマダ"   WITH_TYPES
# [
#   [
#     0,
#     1337566253.89858,
#     0.000355720520019531
#   ],
#   {
#     "normalized": "yamada",
#     "types": [
#       "alpha",
#       "alpha",
#       "alpha",
#       "alpha",
#       "alpha",
#       "alpha",
#       "null"
#     ],
#     "checks": [
#
#     ]
#   }
# ]