Update documentation to 2018 edition
diff --git a/.travis.yml b/.travis.yml
index 424f5d5..c3bfa6c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,19 +3,8 @@
matrix:
include:
- - rust: 1.15.0 # oldest supported version
- script:
- - cargo build
- - cargo build --no-default-features
- - RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo build
- - RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo build --no-default-features
- - rust: 1.19.0 # first release with the --tests flag
- script:
- - cargo test --tests
- - cargo test --no-default-features --tests
- - RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo test --tests
- - RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo test --no-default-features --tests
- - rust: 1.26.0 # first release on which our doc tests pass
+ - rust: 1.15.0
+ - rust: 1.31.0
- rust: stable
- rust: beta
- rust: nightly
diff --git a/README.md b/README.md
index 97f0835..403a2d5 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,6 @@
```rust
extern crate proc_macro;
-extern crate proc_macro2;
#[proc_macro_derive(MyDerive)]
pub fn my_derive(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
diff --git a/src/lib.rs b/src/lib.rs
index cc1ae6a..b190ae5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -733,9 +733,7 @@
/// A span must be provided explicitly which governs the name resolution
/// behavior of the resulting identifier.
///
-/// ```rust
-/// extern crate proc_macro2;
-///
+/// ```edition2018
/// use proc_macro2::{Ident, Span};
///
/// fn main() {
@@ -747,13 +745,9 @@
///
/// An ident can be interpolated into a token stream using the `quote!` macro.
///
-/// ```rust
-/// #[macro_use]
-/// extern crate quote;
-///
-/// extern crate proc_macro2;
-///
+/// ```edition2018
/// use proc_macro2::{Ident, Span};
+/// use quote::quote;
///
/// fn main() {
/// let ident = Ident::new("demo", Span::call_site());
@@ -770,9 +764,7 @@
/// A string representation of the ident is available through the `to_string()`
/// method.
///
-/// ```rust
-/// # extern crate proc_macro2;
-/// #
+/// ```edition2018
/// # use proc_macro2::{Ident, Span};
/// #
/// # let ident = Ident::new("another_identifier", Span::call_site());