fix installation and add test for that

README.md

@@ -3,7 +3,7 @@ Unofficial but extremely useful Label and One Hot encoders.
 Always wanted to be able to use One Hot encoding with string values? to use a label encoder that can handle unknown values? This package finally allows you to do so!
 <br>The Encoders are 100% skelarn compatible and were tested with both skelarn compatible tests and hypothesis fuzz testing.
 ## Installation
-```pip install -e git+https://github.com/RazHoshia/unofficial_encoders.git```
+```pip install git+https://github.com/RazHoshia/unofficial_encoders.git```
 
 ## How To Use
 Please check the [examples folder](https://github.com/RazHoshia/unofficial_encoders/tree/main/examples).

tox.ini

@@ -55,6 +55,17 @@ commands =
     {envpython} one_hot_encoder_example.py
     {envpython} label_encoder_example.py
 
+[testenv:user_install]
+skip_install =
+    true
+changedir =
+    {toxinidir}/examples
+commands_pre =
+    pip install git+https://github.com/RazHoshia/unofficial_encoders.git
+commands =
+    {envpython} one_hot_encoder_example.py
+    {envpython} label_encoder_example.py
+
 [testenv:docs]
 changedir =
     {toxinidir}