Require elasticsearch client as normal usage.

Author: cjsaylor

.gitignore

@@ -1 +1,2 @@
 vendor/
+composer.lock

composer.json

@@ -9,6 +9,7 @@
     ],
     "license": "MIT",
     "require": {
+        "elasticsearch/elasticsearch": ">=1.0 <3.0",
         "psr/log": "^1.0"
     },
     "autoload": {
@@ -21,7 +22,6 @@
     },
     "require-dev": {
         "phpunit/phpunit": "4.8.23",
-        "zumba/elasticsearchunit": "^1.3",
-        "elasticsearch/elasticsearch": "^2.1"
+        "zumba/elasticsearchunit": "^1.3"
     }
 }