Merge branch 'release/0.5.2' into develop
add score range of recommender
add pointer to score range to calc_similarity method
Merge pull request #129 from jubatus/add-score-range

add score range of recommender
Merge branch 'master' into develop
add do_mix description
append discription of set/get label
set cluster name fix #127
add description of label append in train
`this is not RPC method`
add description of calling RPC to proxy
apply fix in English version to Japanese
Merge pull request #133 from jubatus/feature/set_cluster_name

set cluster name fix #127
Merge pull request #132 from jubatus/feature/classifier_set_get_label

append discription of set/get label
Merge pull request #131 from jubatus/feature/do_mix

add do_mix description
Write description about ocaml environment
fix trivial error in classifier API reference (refs #132)
Merge pull request #135 from jubatus/ocaml-env

Write description about ocaml environment
bump version
Merge branch 'release/0.5.3'