add a form for a currency drop down

django/didgeridoo/currencies/forms.py

@@ -0,0 +1,8 @@
+from django import forms
+from currencies.models import ExchangeRate_name
+
+
+class CurrenciesForm(forms.Form):
+    currencies = forms.ModelChoiceField(
+        queryset=ExchangeRate_name.objects.all(),
+                required=False)