Removing Exchange Bank from readme

This is due to 1. Broken, 2. Unmaintained, 3. Outside the scope of the gem.

Author: rposborne

.gitignore

@@ -20,4 +20,6 @@ tmp
 .ruby-version
 .ruby-gemset
 .idea/
-Gemfile.lock
+Gemfile.lock
+rspec
+examples.txt

README.markdown

@@ -129,13 +129,6 @@ Countries now uses the [Currencies][] gem. What this means is you now get back a
     c.currency['name'] #=> 'Dollars'
     c.currency['symbol'] #=> '$'
 
-If a country has an alternate currency it can be accessed via the *alt_currency* method and will also return a Currency object.
-
-Since we are using the [Currencies][] gem we get a bonus ExchangeBank that can be used with the [Money][] gem. It auto loads exchange rates from Yahoo Finance.
-
-    Money.default_bank = Currency::ExchangeBank.new
-    Money.us_dollar(100).exchange_to("CAD")  # => Money.new(124, "CAD")
-
 Address Formatting
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