Merge pull request #10 from dtolnay/nostd

Eliminate implicit dependency on std crate
diff --git a/src/lib.rs b/src/lib.rs
index 33d0a34..3e39b8f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -62,3 +62,5 @@
 //!
 //! extern crate link_cplusplus;
 //! ```
+
+#![no_std]