Fix in order to publish in crates.io (#202)

* Renaming package to ibc in Cargo.toml #198

* Fixing reference to ibc module dependency #198

* Adding README to ibc (modules) crate. #198

* Updates to README #198

* Update dependencies after changing package name #198

* Updating documentation link name #198

* Fixing issue that prevented ibc to be published on crates.io #201

modules/Cargo.toml

@@ -4,7 +4,7 @@ version    = "0.0.2"
 edition    = "2018"
 license    = "Apache-2.0"
 readme     = "README.md"
-keywords   = ["blockchain", "bft", "consensus", "cosmos", "ibc", "tendermint"]
+keywords   = ["blockchain", "consensus", "cosmos", "ibc", "tendermint"]
 repository = "https://github.com/informalsystems/ibc-rs"
 authors    = [
   "Informal Systems <[email protected]>"