Add Documentation/README

Documentation/README.md

@@ -0,0 +1,29 @@
+# Documentation
+
+The wiki is where you can find out information about using the software, the codes, or the API.
+
+### Common pages
+
+* [External Implementations](External_Implementations.md) - need an Ada or Typescript library?
+* [Frequently Asked Questions (FAQ)](FAQ.md)
+* [Who is using Plus Codes?](Reference/Plus_Code_Users.md)
+
+### Specification and technical implementation
+
+* [Open Location Code Overview](Specification/olc_definition.adoc)
+* [Open Location Code Specification](Specification/specification.md)
+* [Guidance for Shortening Codes](Specification/Short_Code_Guidance.md)
+* [Open Location Code Reference API](Specification/API.md)
+* [Plus Codes and Open Location Code Naming Guidelines](Specification/Naming_Guidelines.md)
+
+### Technical
+
+* [An Evaluation of Location Encoding Systems](Reference/comparison.adoc)
+* [Supporting plus codes in GIS software](Reference/GIS_Software.md)
+* [Supporting plus codes in an app](Reference/App_Developers.md)
+
+### Tools
+
+* [Field Data Collection Practices](Reference/Field_Collection_Data_Practices.md)
+* [https://plus.codes API Reference](Reference/plus.codes_Website_API.md)
+* [Using Plus Codes in Spreadsheets](Reference/Using_Spreadsheets.md)