Update README.md

README.md

+For annotating mwe for english language, please use [wccldict](https://gitlab.clarin-pl.eu/nlpworkers/wccldict) service:
+```
+wccldict({"dicts_set":"mwe_en", "tagset":"spacy"})
+```
+
+Also, alternatively you can use it for polish language (uses MWELexicon, so will give same results as this service):
+```
+wccldict({"dicts_set":"mwe_pl", "tagset":"nkjp"})
+```