Disable React deprecation warnings in eslint

This is only done because there is some talk of deprecating this
project. I'll open an issue to address these deprecation warnings in the
case that this doesn't happen.

.eslintrc.json

@@ -26,6 +26,7 @@
     "strict": 2,
 
     "react/display-name": 0,
-    "react/prop-types": 0
+    "react/prop-types": 0,
+    "react/no-deprecated": 0
   }
 }