Lock Dev Dependency

Commit lock file in addition to json to lock in working versions, also update the readme to document using Composer.

Author: xyu

.gitignore

@@ -1,3 +1,2 @@
-/composer.lock
 /vendor/
 .php-autoload-generator-cache.json

README.md

@@ -8,13 +8,6 @@ Currently the following engines are supported:
 * *Hive* -- Over the HiveServer2 Thrift interface, SASL is enabled by default so username and password must be provided however this can be turned off with the `setSasl()` method before calling `connect()`.
 * *Impala* -- Over the Impala Service Thrift interface which extends the Beeswax protocol.
 
-Building Phar
--------------
-
-```
-$ php -d phar.readonly=0 build.php
-```
-
 Usage Example
 -------------
 
@@ -40,3 +33,18 @@ print_r( $impalaTables );
 $hive->disconnect();
 $impala->disconnect();
 ```
+
+Developing & Contributing
+-------------------------
+
+In order to rebuild this library you will need [Composer](https://getcomposer.org/) to install dev dependencies:
+
+```
+$ composer install
+```
+
+Once dev tools are installed the phar can be rebuilt using the build script:
+
+```
+$ php -d phar.readonly=0 build.php
+```