I'm really upset, because the version of "Indesign 2014" has not yet simplified import open source Hunspell dictionaries. Is it really that difficult to design a simple task to import? Gl_ES Use (Galego) as a working language. A language with 3.7 million users thanks to many efforts left the list of endangered languages (this was in 2001). Please do not make us more difficult.
You can add Hunspell to your InDesign by following this: Add or remove Hunspell dictionaries | CC, CS6
Actually this page has not been updated for CC 2015 but the only difference is that the path has changed to: /Applications/Adobe InDesign CC/Resources/LILO/Linguistics/Providers/Plugins2/AdobeHunspellPlugin.bundle/Contents/Shar edSupport/Dictionaries
We have this same problem in Iceland for Icelandic but I have made an installer for mac, that puts everything in its right place. The same could be done for any other missing language.