Update of setup.py, requirements and README

README.md

 # PEYOte
 
-Fulfilling all your GW dreams.
\ No newline at end of file
+Fulfilling all your GW dreams.
+
+In the following, we assume you have installed
+[pip](https://pip.pypa.io/en/stable/installing/) and [git](https://git-scm.com/).
+
+First, clone the repository, install the requirements, and then install `Peyote`.
+```bash
+$ git clone git@github.com:plasky/PEYOte.git
+$ pip install -r requirements.txt
+$ python setup.py install
+```
+
+Once you have run these three steps, you have `Peyote installed`. However, you
+aren't quite yet ready to run anything. First,
+`pymultinest` needs the MultiNest library to be installed to work properly. The
+full instructions can be found
+[here](https://johannesbuchner.github.io/PyMultiNest/install.html). We have
+also written [a shortened tl;dr here](./TLDR_MULTINEST.md).
+
+Second, you need `lalsimulation` from `lalsuite` installed. To do this head
+to [https://git.ligo.org/lscsoft/lalsuite](https://git.ligo.org/lscsoft/lalsuite)
+to check you have an account and SSH keys set up. Then,
+
+```bash
+$ git lfs install
+$ git clone git@git.ligo.org:lscsoft/lalsuite.git
+$ cd lalsuite
+$ ./00boot
+$ ./configure --prefix=${HOME}/lalsuite-install --disable-all-lal --enable-swig  --enable-lalsimulation
+$ make; make install
+```
+
+** warning **: in the configure line here, we have disabled everything except lalsimulation. If you need other modules, see `./configure --help`.
+

requirements.txt

+numpy
+matplotlib>=1.4
+scipy
+gwpy
+pandas
+pymultinest
+gwsurrogate
+NRSur7dq2
+chainconsumer

setup.py

@@ -2,7 +2,7 @@
 
 from distutils.core import setup
 
-setup(name='PEYOte',
+setup(name='peyote',
       version='0.1',
       packages=['peyote'],
       )