Use a familiar way to specify compiler versions
diff --git a/examples/README.md b/examples/README.md
index 267c28f..ea59c02 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -6,7 +6,7 @@
 ### [`heapsize`](heapsize)
 
 A complete working implementation of a custom derive. Works on any Rust compiler
->=1.15.0.
+1.15+.
 
 ### [`lazy-static`](lazy-static)