Activate all doctests

Author: Yamakaky

src/quick_main.rs

@@ -1,10 +1,12 @@
 /// Convenient wrapper to be able to use `try!` and such in the main. You can
 /// use it with a separated function:
 ///
-/// ```ignore
+/// ```
 /// # #[macro_use] extern crate error_chain;
 /// # error_chain! {}
+/// # fn main() {
 /// quick_main!(run);
+/// # }
 ///
 /// fn run() -> Result<()> {
 ///     Err("error".into())
@@ -13,22 +15,26 @@
 ///
 /// or with a closure:
 ///
-/// ```ignore
+/// ```
 /// # #[macro_use] extern crate error_chain;
 /// # error_chain! {}
+/// # fn main() {
 /// quick_main!(|| -> Result<()> {
 ///     Err("error".into())
 /// });
+/// # }
 /// ```
 ///
 /// You can also set the exit value of the process by returning a type that implements [`ExitCode`](trait.ExitCode.html):
 ///
-/// ```ignore
+/// ```
 /// # #[macro_use] extern crate error_chain;
 /// # error_chain! {}
+/// # fn main() {
 /// quick_main!(run);
+/// # }
 ///
-/// fn run() -> Result<u32> {
+/// fn run() -> Result<i32> {
 ///     Err("error".into())
 /// }
 /// ```