Add support for releaser (#13)

Author: keelerm84

.ldrelease/config.yml

@@ -0,0 +1,9 @@
+version: 2
+
+publications:
+  - url: https://docs.rs/eventsource-client
+    description: crates.io
+
+jobs:
+  - template:
+      name: rust

Cargo.toml

@@ -3,11 +3,12 @@ name = "eventsource-client"
 version = "0.7.0"
 description = "Client for the Server-Sent Events protocol (aka EventSource)"
 repository = "https://github.com/launchdarkly/rust-eventsource-client"
-authors = ["Sam Stokes <sstokes@launchdarkly.com>"]
+authors = ["LaunchDarkly"]
 edition = "2018"
 license = "Apache-2.0"
 exclude = [
-  ".circleci/*",
+  ".circleci",
+  ".ldrelease"
 ]
 
 [dependencies]