Drop doc-comment dependency but keep testing readme examples

Author: GuillaumeGomez

rand_jitter/Cargo.toml

@@ -25,8 +25,5 @@ libc = { version = "0.2", default_features = false }
 [target.'cfg(target_os = "windows")'.dependencies]
 winapi = { version = "0.3", features = ["profileapi"] }
 
-[dev-dependencies]
-doc-comment = "0.3"
-
 [features]
 std = ["rand_core/std"]

rand_jitter/src/lib.rs

@@ -63,12 +63,17 @@ extern crate libc;
 #[cfg(target_os = "windows")]
 extern crate winapi;
 
+// Coming from https://crates.io/crates/doc-comment
 #[cfg(test)]
-#[macro_use]
-extern crate doc_comment;
+macro_rules! doc_comment {
+    ($x:expr) => {
+        #[doc = $x]
+        extern {}
+    };
+}
 
 #[cfg(test)]
-doctest!("../README.md");
+doc_comment!(include_str!("../README.md"));
 
 #[cfg(not(feature = "log"))]
 #[macro_use] mod dummy_log;