Typos in README.
Added elm_map_overlay_get_cb_set.
Added elm_map_overlay_class_add/append/remove.
Added elm_map_overlay_class_zoom_max_set/get.
Added elm_map_overlay_group_members_get.
Added elm_map_overlay_bubble_add/follow.
Adde elm_map_overlay_bubble_content_append/clear.
Added elm_map_overlay_route/line/polygon(_region)/circle/scale_add.
Added elm_map_tile_load_status_get.
Merge branch 'master' of https://github.com/vivienm/ocaml-efl