Updated readme

README.rst

@@ -78,8 +78,10 @@ To install this NApp, first, make sure to have the same venv activated as you ha
 
    $ git clone https://github.com/kytos-ng/of_lldp.git
    $ cd of_lldp
-   $ python setup.py develop
+   $ python3 -m pip install --editable .
 
+To install the kytos environment, please follow our
+`development environment setup <https://github.com/kytos-ng/documentation/blob/master/tutorials/napps/development_environment_setup.rst>`_.
 
 Requirements
 ============

setup.py

@@ -254,7 +254,7 @@ def read_requirements(path="requirements/run.txt"):
       author='Kytos Team',
       author_email='[email protected]',
       license='MIT',
-      install_requires=read_requirements() + ['setuptools >= 36.0.1'],
+      install_requires=read_requirements() + ['importlib_metadata'],
       packages=[],
       cmdclass={
           'clean': Cleaner,