(Cat) add README.md

src/catalan/README.md

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+# Catalan
+
+The Catalan Resource Grammar is built using the Romance functor at
+[romance](../romance/).
+
+## Language information
+- English name: Catalan
+- Autonym: català
+- ISO code: Cat
+
+## Authors
+
+* Jordi Saludes
+
+With contributions from Inari Listenmaa, Aarne Ranta, Francis Tyers and Daniel Vidal Hussey.
+
+## Implementation information
+
+### Morphology
+
+The [BeschCat](BeschCat.gf) module contains the complete inflection tables for
+Catalan verbs, divided in paradigms following
+[*Els verbs conjugats*](https://www.claret.cat/ca/llibre/ELS-VERBS-CONJUGATS-849136100)
+(Xuriguera, 1972).
+
+### Known issues
+
+Clitic pronouns do not combine like they are supposed to.
+
+### Supplementary files
+
+[DictionaryCat](https://github.com/GrammaticalFramework/wide-coverage/blob/master/translator/DictionaryCat.gf)
+originally derived from [Apertium](https://github.com/apertium/apertium-cat) lexicon.
+
+## History and applications
+
+Some applications include:
+
+* [MOLTO phrasebook](http://www.molto-project.eu/sites/default/files/everyday.pdf)
+* GF Mathematical Grammar Library ([paper](http://www.molto-project.eu/sites/default/files/gf-mgl.pdf), [demo](http://cloud.grammaticalframework.org/minibar/minibar.html))
+* GF [Wide-Coverage translator](http://cloud.grammaticalframework.org/wc.html)
+
+## Maintainer
+
+Inari Listenmaa ([@inariksit](https://github.com/inariksit))