Add Binder files and badge

Signed-off-by: Jeremy Tuloup <[email protected]>

Author: jtpio

README.md

@@ -1,5 +1,6 @@
 # ipydatagrid
 
+[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/bloomberg/ipydatagrid/HEAD?urlpath=lab%2Ftree%2Fexamples%2FDataGrid.ipynb)
 [![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white)](https://github.com/pre-commit/pre-commit)
 [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)

binder/environment.yml

@@ -0,0 +1,11 @@
+name: ipydatagrid
+channels:
+- conda-forge
+dependencies:
+- ipywidgets=7.6
+- jupyterlab=3
+- numpy
+- nodejs
+- pandas
+- pip:
+  - ipydatagrid==1.0.0