Added caveats to README and reordered sections.

README.md

@@ -28,20 +28,10 @@ Clojure [tools.deps.alpha](https://github.com/clojure/tools.deps.alpha):
 
 ```
 
-## Parameters
-
-Datomic Ions provides facilities for accessing system
-parameters. Refer to the [Ion Parameters](https://docs.datomic.com/cloud/ions/ions-reference.html#ion-parameters)
-docs for an overview. The `io.pedestal.ions` namespace provides an interceptor fn, `datomic-params-interceptor`,
-which makes these these parameters available on the Pedestal Context. Include this interceptor in your commons interceptor collection
-to enable parameter support. If included, this interceptor makes parameters available on the Context through the following keys:
+## Caveats
 
-- `:io.pedestal.ions/app-info`      Contains the results of `(ion/get-app-info)`
-- `:io.pedestal.ions/env-map`       Contains the results of `(ion/get-env)`
-- `:io.pedestal.ions/params`        Only present if the `:get-params?` option is provided.
-                                    Contains the results of `(ion/get-params {:path path})`
-                                    where `path` is calculated using :app-name and :env
-                                    from `app-info` and `env-map`, respectively. Param names are keywordized."
+Going async either by returning a channel instead of a Context map or
+response body is currently not supported.
 
 ## Usage
 
@@ -104,6 +94,21 @@ Check out the [Pedestal Ions Sample](https://github.com/pedestal/pedestal-ions-s
 a fully functional sample and [example](https://github.com/pedestal/pedestal-ions-sample/blob/master/deps.edn)
 `deps.edn` configuration.
 
+## Parameters
+
+Datomic Ions provides facilities for accessing system
+parameters. Refer to the [Ion Parameters](https://docs.datomic.com/cloud/ions/ions-reference.html#ion-parameters)
+docs for an overview. The `io.pedestal.ions` namespace provides an interceptor fn, `datomic-params-interceptor`,
+which makes these these parameters available on the Pedestal Context. Include this interceptor in your commons interceptor collection
+to enable parameter support. If included, this interceptor makes parameters available on the Context through the following keys:
+
+- `:io.pedestal.ions/app-info`      Contains the results of `(ion/get-app-info)`
+- `:io.pedestal.ions/env-map`       Contains the results of `(ion/get-env)`
+- `:io.pedestal.ions/params`        Only present if the `:get-params?` option is provided.
+                                    Contains the results of `(ion/get-params {:path path})`
+                                    where `path` is calculated using :app-name and :env
+                                    from `app-info` and `env-map`, respectively. Param names are keywordized."
+
 ## Contributing
 
 Thanks for your interest in contributing to pedestal.ions! This project is governed by the same contribution guidelines as dictated in the [Contributing to Pedestal](https://github.com/pedestal/pedestal/blob/master/CONTRIBUTING.md) document. Please have a look and sign a [Cognitect Contributor Agreement](https://secure.echosign.com/public/hostedForm?formid=8JU33Z7A7JX84U) before submitting a PR.