Make the build deny(warnings).

Author: emilio

src/ir/ty.rs

@@ -605,7 +605,7 @@ impl Type {
                             // If the type name is empty we're probably
                             // over-recursing to find a template parameter name
                             // or something like that, so just don't be too
-                            // noisy with it sine it causes confusion, see for
+                            // noisy with it since it causes confusion, see for
                             // example the discussion in:
                             //
                             // https://github.com/jamesmunns/teensy3-rs/issues/9

src/lib.rs

@@ -12,6 +12,7 @@
 #![cfg_attr(feature = "clippy", plugin(clippy))]
 
 #![deny(missing_docs)]
+#![deny(warnings)]
 
 // We internally use the deprecated BindgenOptions all over the place. Once we
 // remove its `pub` declaration, we can un-deprecate it and remove this pragma.