2014-02-11: make it clear that #!curly-infix requires a final space.

make it clear that #!curly-infix requires a final space.

diff --git a/README b/README
--- a/README
+++ b/README
@@ -37,7 +37,7 @@ Usage
 Wisp and curly infix (SRFI-105)
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-Wisp treats braces "{}" the same as parentheses "()" and square brackets "[]", so you can use it with curly infix ([SRFI-105](http://srfi.schemers.org/srfi-105/srfi-105.html)) to get more customary math expressions. In Guile Scheme with Wisp you can activate curly infix using the following line `. #!curly-infix ` (mind the final space!)
+Wisp treats braces "{}" the same as parentheses "()" and square brackets "[]", so you can use it with curly infix ([SRFI-105](http://srfi.schemers.org/srfi-105/srfi-105.html)) to get more customary math expressions. In Guile Scheme with Wisp you can activate curly infix using the following line `. #!curly-infix ` (with a final space!)
 
 The fibonacci-example above can then be transformed to the following: