Update 2.10.md

Author: sksamuel

2.10.md

@@ -33,7 +33,11 @@ Salat and other libraries using macros extensively.
 
 This means scoverage falls foul of this issue. I don't know if one could call it a bug, 
 since range positions are not activated by default, and if it is a bug, whether to blame macro writers, 
-or the compiler, but the end result is that it doesn't work, and 2.10 won't be supported any longer. 
+or the compiler, but the end result is that it doesn't work in 2.10 but does in 2.11[1]
+
+Unfortunately this means 2.10 won't be supported any longer. 
+
+[1] https://issues.scala-lang.org/browse/SI-6743