Document that Non-Embedded Codelists are symlinked to the versions at…

… which they exist.

iati/resources/standard/README.md

@@ -2,6 +2,8 @@
 
 The folder (and sub-folders) contain data that is used by the library that relates to the IATI Standard.
 
-Data for a given version of the Standard is stored within a corresponding folder – for example version 2.02 data is contained with the `202` folder.  Note that this contains all content for that version of the standard, symlinks are used to ensure content replicated across multiple versions of the Standard - for example non-embedded codelists – is not replicated for each version of the Standard.
+Data for a given version of the Standard is stored within a corresponding folder – for example version 2.02 data is contained with the `2-02` folder.  Note that this contains all content for that version of the standard, symlinks are used to ensure content replicated across multiple versions of the Standard - for example non-embedded codelists – is not replicated for each version of the Standard.
 
-Currently non-embedded codelists are stored within the `codelists_non_embedded` folder. Due to the relevant modification schedule, it may be desired to nest them within a `2xx` folder.
+Currently non-embedded codelists are stored within the `codelists_non_embedded` folder. Due to the relevant modification schedule, it may be desired to nest them within a `2` or `2xx` folder.
+
+Non-Embedded Codelists must be symlinked from each version at which they occur. This can be done with: `ln -s [path/to/pyIATI]/iati/resources/standard/codelists_non_embedded/* [path/to/pyIATI]/iati/resources/standard/[versionFolder]/codelists/`