diff --git a/.travis.yml b/.travis.yml
index 67acc46..517be1e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ language: rust
 matrix:
   fast_finish: true
   include:
-    - rust: beta
+    - rust: stable
     - rust: nightly
       env: FEATURES="--features nightly"
 env:
diff --git a/Cargo.toml b/Cargo.toml
index 32c275a..a1c7c24 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,9 @@ travis-ci = { repository = "MingweiSamuel/Riven" }
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[package.metadata.docs.rs]
+features = [ "nightly" ]
+
 [features]
 nightly = [ "parking_lot/nightly" ]
 
diff --git a/README.md b/README.md
index eea5ffc..126c86b 100644
--- a/README.md
+++ b/README.md
@@ -28,10 +28,9 @@ use riven::consts::Region;
 // Riven Enter tokio async runtime.
 let rt = tokio::runtime::Runtime::new().unwrap();
 rt.block_on(async {
-    // Create RiotApi instance from key.
+    // Create RiotApi instance from key string.
     let api_key = "RGAPI-01234567-89ab-cdef-0123-456789abcdef";
-    let api_key = std::env::var("RGAPI_KEY").ok()
-        .or_else(|| std::fs::read_to_string("apikey.txt").ok()).unwrap();
+    # /* (doc testing) */ let api_key = std::env!("RGAPI_KEY");
     let riot_api = RiotApi::with_key(api_key);
 
     // Get summoner data.
diff --git a/src/lib.rs b/src/lib.rs
index 4876c67..1133e9d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,7 +4,7 @@
 #![forbid(unsafe_code)]
 
 #![cfg_attr(feature = "nightly", doc(include = "../README.md"))]
-#![cfg_attr(not(feature = "nightly"), doc("See [README.md](https://github.com/MingweiSamuel/Riven#----riven--------------------)."))]
+#![cfg_attr(not(feature = "nightly"), doc = "See [README.md](https://github.com/MingweiSamuel/Riven#readme).")]
 
 mod config;
 pub use config::RiotApiConfig;