fix(docs): cannot install quant

fixed wrong package name in docs

refs quant#33

Author: ThorstenSuckow

README.md

@@ -7,7 +7,7 @@ source projects, where functionality has proven useful to justify a refactoring
 ## Installation
 
 ```bash
-$ composer require quant-php/quant
+$ composer require quant/quant
 ```
 
 ## Documentation