Merge pull request #46 from akiss77/pr-ascii-reform

Keep up with the std::ascii reform.

Author: alexcrichton

src/ffi/easy.rs

@@ -150,7 +150,7 @@ impl ResponseBuilder {
     fn add_header(&mut self, name: &str, val: &str) {
         // TODO: Reduce allocations
         use std::ascii::OwnedAsciiExt;
-        let name = name.to_string().into_ascii_lower();
+        let name = name.to_string().into_ascii_lowercase();
 
         let inserted = match self.hdrs.get_mut(&name) {
             Some(vals) => {