Move test-doc to examples/

Author: Yamakaky

.travis.yml

@@ -21,7 +21,6 @@ before_script:
 script:
 - cargo build --verbose $FEATURES
 - cargo test --verbose $FEATURES
-- cd test-doc && cargo build
 
 after_success:
 - travis-cargo --only stable doc

examples/doc.rs

@@ -0,0 +1,29 @@
+#![deny(missing_docs)]
+
+//! This module is used to check that all generated items are documented.
+
+#[macro_use]
+extern crate error_chain;
+
+/// Inner module.
+pub mod inner {
+    error_chain! {
+    }
+}
+
+error_chain! {
+    links {
+        inner::Error, Test, #[doc = "Doc"];
+    }
+    foreign_links {
+        ::std::io::Error, Io, #[doc = "Io"];
+    }
+    errors {
+        /// Doc
+        Test2 {
+
+        }
+    }
+}
+
+fn main() {}