Psr 4 compliance (#12)

*  moving plugin to src/ directory and psr-4 compliant structure. Step I

*  adding .gitignore

*  psr-4 compliance. adapting README

*  psr-4 compliance. README fixes

*  psr-4 compliance. README fixes

* psr-4 comliance. adding composer.json and composer autoloading files

*  psr-4 compliance. removing old lib directory

.gitignore

@@ -0,0 +1,17 @@
+*.pyc
+.scrapy
+test.db
+*~
+.DS_Store
+/node_modules
+wordforms_*.txt
+media/*
+node/node_modules
+js-layers/classic/node_modules
+*.diff
+.sass-cache
+/bower_components
+ghostdriver.log
+*.sublime-project
+*.sublime-workspace
+composer.lock

composer.json

@@ -0,0 +1,23 @@
+{
+    "name": "doofinder/doofinder",
+    "type": "library",
+    "description": "Doofinder php API Client",
+    "keywords": ["search","api", "doofinder"],
+    "homepage": "https://github.com/doofinder/php-doofinder",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "JoeZ99",
+            "email": "[email protected]",
+            "role": "Developer"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Doofinder\\Api\\": "src/"
+        }
+    }
+}