Fixed vertx-mod-hk2 version in README
Fixed vertx-mod-hk2 version in README

vertx-mod-hk2 version is now 1.6.0-SNAPSHOT to match version used by vertx-mod-jersey 2.5.0-SNAPSHOT
christianbellinaef/vertx-jersey,christianbellinaef/vertx-jersey,vnadgir-ef/vertx-jersey,englishtown/vertx-jersey,vnadgir-ef/vertx-jersey,englishtown/vertx-jersey,ef-labs/vertx-jersey,ef-labs/vertx-jersey