Alexander Vlasov

Document what overriding field names mean

9

#### Goal Filter table by field names specified with **RealmField**. #### Expected Results No crashes. #### Actual Results App crashes: ``` Caused by: java.lang.IllegalArgumentException: Invalid query: field '_id' not found...

Major changes: - added check for ImageView's padding - updated code so people can easily extend LetterImageView and draw custom shapes Thanks for your work :)