Increment version to 2.1.0

Author: DavidAntaramian

README.md

@@ -58,7 +58,7 @@ For a complete overview, see the [Timber for Elixir docs](https://timber.io/docs
     end
 
     def deps do
-      [{:timber, "~> 2.0"}]
+      [{:timber, "~> 2.1"}]
     end
     ```
 
@@ -180,4 +180,4 @@ encouraged. In cases where the data is meaningful, consider [logging a custom ev
 
 <p align="center" style="background: #221f40;">
 <a href="http://github.com/timberio/timber-elixir"><img src="http://files.timber.io/images/ruby-library-readme-log-truth.png" height="947" /></a>
-</p>
+</p>

UPGRADING.md

@@ -2,6 +2,24 @@
 
 This documents outlines how to upgrade from major versions of Timber
 
+## 2.0 to 2.1
+
+Custom HTTP clients have been deprecated as of version 2.1.0. You can remove the
+`:http_client` key from any Timber configuration. For example, the following:
+
+```elixir
+config :timber,
+  api_key: "123",
+  http_client: Timber.HTTPClients.Hackney
+```
+
+can become:
+
+```elixir
+config :timber,
+  api_key: "123"
+```
+
 ## 1.x to 2.X
 
 The 2.X introduces a number of enhancements and improvements. You can read more about the
@@ -15,4 +33,4 @@ To upgrade, please follow these steps:
    You can locate your api key by following this guide:
    https://timber.io/docs/app/advanced/api-keys/
 
-If you have *any* issue, please reach out to us: support@timber.io
+If you have *any* issue, please reach out to us: support@timber.io

mix.exs

@@ -9,7 +9,7 @@ defmodule Timber.Mixfile do
 
   @source_url "https://github.com/timberio/timber-elixir"
   @homepage_url "https://github.com/timberio/timber-elixir"
-  @version "2.0.2"
+  @version "2.1.0"
 
   # Project manifest for Mix
   #