fleshed out README, added MIT license and license headers in the code

LICENSE.md

@@ -0,0 +1,21 @@
+### MIT License
+
+Copyright (c) 2020 Erbosoft Metaverse Design Solutions
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 # distance-calc
 
-Python-based distance calculator to help determine how far new apartment complexes are from the office.
+A Python-based distance calculator to help determine how far new apartment complexes are from the office.
+
+## Scripts
+
+* **gcoder.py** - Takes an address on the command line and returns its latitude and longitude.
+  May use one of four different geocoding engines.
+* **dcalc.py** - Takes an address on the command line and returns its latitude and longitude,
+  distance from the VMware Carbon Black Boulder office, and projected drive time to the
+  Boulder office.  Uses Google APIs.
+* **batch_distance.py** - Same as dcalc, but uses CSV files for input and output.
+
+## Configuration File
+
+All scripts make use of a configuration file, called `geoapi.ini` by default, that contains the
+API keys.  Copy the file `geoapi.ini.template` and add your API keys.  You can also specify a different
+configuration file with the `-C` or `--config` option to each script.

src/batch_distance.py

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 # Batch_Distance.py: Batch process a bunch of distance measurements.
+# *****************************************************************************
+# Copyright (c) Erbosoft Metaverse Design Solutions 2020. All Rights Reserved.
+# SPDX-License-Identifier: MIT
+# *****************************************************************************
+# *
+# * DISCLAIMER. THIS PROGRAM IS PROVIDED TO YOU "AS IS" WITHOUT
+# * WARRANTIES OR CONDITIONS OF ANY KIND, WHETHER ORAL OR WRITTEN,
+# * EXPRESS OR IMPLIED. THE AUTHOR SPECIFICALLY DISCLAIMS ANY IMPLIED
+# * WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY,
+# * NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.
 
 import sys
 import argparse

src/dcalc.py

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 # DCalc.py: basic test of distance calculation from the Boulder office
+# *****************************************************************************
+# Copyright (c) Erbosoft Metaverse Design Solutions 2020. All Rights Reserved.
+# SPDX-License-Identifier: MIT
+# *****************************************************************************
+# *
+# * DISCLAIMER. THIS PROGRAM IS PROVIDED TO YOU "AS IS" WITHOUT
+# * WARRANTIES OR CONDITIONS OF ANY KIND, WHETHER ORAL OR WRITTEN,
+# * EXPRESS OR IMPLIED. THE AUTHOR SPECIFICALLY DISCLAIMS ANY IMPLIED
+# * WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY,
+# * NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.
 
 import sys
 import argparse

src/gcoder.py

@@ -1,4 +1,14 @@
 # GCoder.py: basic geocoding test
+# *****************************************************************************
+# Copyright (c) Erbosoft Metaverse Design Solutions 2020. All Rights Reserved.
+# SPDX-License-Identifier: MIT
+# *****************************************************************************
+# *
+# * DISCLAIMER. THIS PROGRAM IS PROVIDED TO YOU "AS IS" WITHOUT
+# * WARRANTIES OR CONDITIONS OF ANY KIND, WHETHER ORAL OR WRITTEN,
+# * EXPRESS OR IMPLIED. THE AUTHOR SPECIFICALLY DISCLAIMS ANY IMPLIED
+# * WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY,
+# * NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.
 
 import sys
 import argparse