[telepathy-spec/master] Balance: relax requirement for international currency codes to SHOULD

[Simon McVittie]

Skype doesn't always tell you such a currency code, apparently...
---
 spec/Connection_Interface_Balance.xml |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/spec/Connection_Interface_Balance.xml b/spec/Connection_Interface_Balance.xml
index fae5709..55a4e15 100644
--- a/spec/Connection_Interface_Balance.xml
+++ b/spec/Connection_Interface_Balance.xml
@@ -66,9 +66,10 @@
       </tp:member>
       <tp:member type="s" name="Currency">
         <tp:docstring>
-          The international currency code represented by this amount, such
-          as "EUR", "USD", or "JPY". An empty string can be used to indicate
-          that the currency is not known.
+          The currency code represented by this amount, which SHOULD be an
+          international currency code such as "EUR", "USD", or "JPY" if
+          possible. An empty string can be used to indicate that the currency
+          is not known.
         </tp:docstring>
       </tp:member>
     </tp:struct>
-- 
1.5.6.5