Keystore vs keystore

theres almost no distinction in wording/format of lightwallet.keystore vs the keystore obj.
its class-like, so i would capitalize it

``` js
var keystore = Keystore.deserialize(serialized_keystore)
```

Review the references to lightwallet.keystore, the keystore object, and the Keystore.deserialize(serialized_keystore) example shown in the issue. Identify where their wording or capitalization is inconsistent, then verify that the terminology clearly distinguishes the serialized keystore from the Keystore object.

Written by the indexing model from the issue text.