Improve outputs 54

Created by: pmpowers-usgs

Improved HazardCalc outputs and made extensive changes to examples and read files. Resolves #54 (closed)

etc/examples/1-hazard-curve/README.md

+Example 1: A simple hazard calculation
+--------------------------------------
+
+__Working directory:__ `/path/to/nshmp-haz/etc/examples/1-hazard-curve`
+
+On the command line, navigate to this directory and execute the following:
+
+```Shell
+hazard ../../peer/models/Set1-Case1
+```
+
+The PEER models, such as that designated above, consist of simple cases for different source types commonly encountered in a PSHA and are included in the nshmp-haz repository to support testing. See the [PEER directory](../../peer/) for more information.
+
+The result of this calculation should be available as a single comma-delimited file containing several total mean hazard curves for PGA in a newly created 'curves' directory. In this example, the calculation configuration was derived from the model directory. Note that not all calculation [configuration](https://github.com/usgs/nshmp-haz/wiki/Configuration) parameters need be supplied; see the [configuration file](../../peer/models/Set1-Case1/config.json) for this example model.
+
+Also note that when only a model is supplied to `HazardCalc`, all output is written to the current working directory. In the next example, we'll override the model supplied configuration with a custom file.
+
+#### Next: [Example 2 – A custom configuration](../2-custom-config)