Readme: added resources

Author: f3l1x

README.md

@@ -13,7 +13,7 @@ Tuned PostgreSQL 10 docker image.
 
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-## Version
+## Versions
 
 - PostgreSQL 10
 
@@ -33,3 +33,7 @@ SELECT unaccent('Žluťoučký kůň'); // Zlutoucky kun
 ## Credits
 
 > Based on Ondrej Musil https://github.com/freaz/docker-postgres-czech-unaccent. Thank you.
+
+## Resources
+
+- https://postgres.cz/wiki/Instalace_PostgreSQL#Instalace_Fulltextu