more doc updates

Author: thebigredgeek

README.md

@@ -6,6 +6,12 @@ A dead simple distributed locking library for Node.js and [etcd](http://github.c
 [![CircleCI](https://circleci.com/gh/thebigredgeek/microlock/tree/master.svg?style=shield)](https://circleci.com/gh/thebigredgeek/microlock/tree/master)
 
 
+
+
+## What is Etcd?
+
+[Etcd](https://github.com/coreos/etcd) is a distributed key-value store, built by the [CoreOS](https://coreos.com/) team, that provides strong guarantees around consistency and partition tolerance.  Data is duplicated to all nodes in a given cluster and remains consistent between node failures.  Cluster leaders are elected via the [Raft consensus algorithm](https://raft.github.io/).  Etcd provides operations for atomic value swapping/removal based on criteria and TTL for values, making it a perfect media for distributed locks.
+
 ## What is a distrbuted lock?
 
 A distributed lock is a mechanism that provides serialized flow control on a context that is acted on by more than one process.  These processes typically operate on different machines via Service Oriented Architecture.  Each process uses an object called a distributed lock to "lock" access to the shared context, aliased by a key, so that only one process, each aliased by a node id, can act on it at a time, thereby ensuring consistency and preventing race conditions.
@@ -117,6 +123,8 @@ main();
 
 ## Methods
 
+All methods (except destroy) return promises, making it easy to use features like async/await with ES2016/ES2017 via Babel.
+
 ### Microlock(etcd, key, node_id, [ttl = 1])
 Creates a microlock client for a lock key.
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "microlock",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Simple distributed locking with Etcd for Node.js",
   "main": "lib/microlock.js",
   "repository": {