update readme

README.md

@@ -32,28 +32,15 @@ project.
 
 Setup conda environment to install ADDIE into:
 ```
-conda config --add channels neutrons
-conda config --add channels mantid
-conda config --add channels conda-forge
 conda create -n addie-env
-source activate addie-env
+conda activate addie-env
 ```
 
 Install ADDIE in the conda environment:
 ```
-conda install -q -y -c conda-forge nexus==4.4.3
-conda install -q -y -c mantid poco==1.7.3
-conda install -q -y -c mantid mantidworkbench
-conda install -q -y -c neutrons mantid-total-scattering-python-wrapper
-conda install -q -y -c neutrons addie==${ADDIE_VERSION}
+conda install -c neutrons addie
 ```
 
-The install steps above have been found to create a reproducible install.
-If not done in this order, conda can identify different configurations that are NOT in a working state.
-
-NOTE: You may need to ensure some packages are not imported from the `defaults` channel. 
-As above, add them prior to installing ADDIE where the channel is set explicitly
-
 ## Uninstall
 
 ```
@@ -81,10 +68,14 @@ MANTIDPATH=/path/to/mantid/build/bin PATH=$MANTIDPATH:$PATH PYTHONPATH=$MANTIDPA
 ### Installation development environment using Conda
 ```
 conda env create
-source activate addie
-python setup.py install
+conda activate addie
+pip install -e .
 ```
 
+This will use the configuration in the `environment.yml` file for setting up the
+`addie` conda environment. If one needs to change the conda environment name,
+simply edit the `addie` to something else in the `environment.yml` file.
+
 ### Uninstall
 
 ```