Add binder links to README and echo commands during build

Author: frreiss

README.md

@@ -2,6 +2,8 @@
 # Text Extensions for Pandas
 
 [![Documentation Status](https://readthedocs.org/projects/text-extensions-for-pandas/badge/?version=latest)](https://text-extensions-for-pandas.readthedocs.io/en/latest/?badge=latest)
+[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/frreiss/tep-fred/branch-binder?urlpath=lab/tree/notebooks)
+
 
 Natural language processing support for Pandas dataframes.
 
@@ -61,10 +63,19 @@ of this repository to the front of `sys.path`.
 
 ## Documentation
 
-For examples of how to use the library, take a look at the notebooks in 
-[this directory](https://github.com/CODAIT/text-extensions-for-pandas/tree/master/notebooks).
+For examples of how to use the library, take a look at the **example notebooks** in 
+[this directory](https://github.com/CODAIT/text-extensions-for-pandas/tree/master/notebooks). You can try out these notebooks on [Binder](https://mybinder.org/) by navigating to [https://mybinder.org/v2/gh/frreiss/tep-fred/branch-binder?urlpath=lab/tree/notebooks](https://mybinder.org/v2/gh/frreiss/tep-fred/branch-binder?urlpath=lab/tree/notebooks)
+
+To run the notebooks on your local machine, follow the following steps:
+
+1. Install [Anaconda](https://docs.anaconda.com/anaconda/install/) or [Miniconda](https://docs.conda.io/en/latest/miniconda.html).
+1. Check out a copy of this repository.
+1. Use the script `env.sh` to set up an Anaconda environment for running the code in this repository.
+1. Type `jupyter lab` from the root of your local source tree to start a [JupyterLab](https://jupyterlab.readthedocs.io/en/stable/) environment.
+1. Navigate to the `notebooks` directory and choose any of the notebooks there
+
 
-API documentation can be found at [https://readthedocs.org/projects/text-extensions-for-pandas/](https://readthedocs.org/projects/text-extensions-for-pandas/).
+**API documentation** can be found at [https://readthedocs.org/projects/text-extensions-for-pandas/](https://readthedocs.org/projects/text-extensions-for-pandas/).
 
 
 ## Contents of this repository
@@ -83,11 +94,7 @@ API documentation can be found at [https://readthedocs.org/projects/text-extensi
   cover complex end-to-end NLP use cases (work in progress).
 
 
-## Instructions to run a demo notebook
-1. Check out a copy of this repository
-1. (optional) Use the script `env.sh` to set up an Anaconda environment for running the code in this repository.
-1. Type `jupyter lab` from the root of your local source tree to start a [JupyterLab](https://jupyterlab.readthedocs.io/en/stable/) environment.
-1. Navigate to the `notebooks` directory and choose any of the notebooks there
+## Instructions to run a demo notebook locally
 
 
 ## Contributing

binder/postBuild

@@ -1,5 +1,8 @@
 # Post-build script for binder/repo2docker environment setup.
 
+# Log commands
+set -ex
+
 # Install additional packages beyond those in requirements.txt so that the
 # JupyterLab instance will be able to run all of the NLP library integrations.
 pip install -r config/dev_reqs.txt