README.md in rails-i18n-5.0.0.beta1 vs README.md in rails-i18n-5.0.0.beta2

@@ -59,13 +59,20 @@
 > et, eu, fa, fi, fr, fr-CA, fr-CH, gl, he, hi, hi-IN, hr, hu, id, is, it,
 > it-CH, ja, km, kn, ko, lb, lo, lt, lv, mk, mn, mr-IN, ms, nb, ne, nl, nn, or,
 > pa, pl, pt, pt-BR, rm, ro, ru, sk, sl, sr, sv, sw, ta, th, tl, tr, tt, ug, uk,
 > ur, uz, vi, wo, zh-CN, zh-HK, zh-TW, zh-YUE
 
-Currently, no locales are complete. Typically they lack the following keys:
+Complete locales are:
 
+> en-US, ja
+
+Currently, most locales are incomplete. Typically they lack the following keys:
+
 - `activerecord.errors.messages.record_invalid`
-- `activerecord.errors.messages.restrict_dependent_destroy`
+- `activerecord.errors.messages.restrict_dependent_destroy.has_one`
+- `activerecord.errors.messages.restrict_dependent_destroy.has_many`
+- `errors.messages.model_invalid`
+- `errors.messages.required`
 
 We always welcome your contributions!
 
 ## Currency symbols