update travis ci (#64)

Author: k-nasa

.travis.yml

@@ -2,14 +2,26 @@ language: rust
 rust:
   - nightly
 
-before_script: |
-  rustup component add rustfmt-preview &&
-  rustup component add clippy-preview &&
-  rustup target add wasm32-unknown-unknown
-script: |
-  cargo fmt -- --check &&
-  cargo clippy -- -D clippy::all &&
-  cargo build --verbose &&
-  cargo check --target wasm32-unknown-unknown &&
-  cargo test  --verbose
+matrix:
+  include:
+    - name: cargo fmt
+      install:
+        - rustup component add rustfmt-preview
+      script:
+        - cargo fmt --all -- --check
+    - name: cargo clippy
+      install:
+        - rustup component add clippy-preview
+      script:
+        - cargo clippy -- -D clippy::all
+    - name: cargo build
+      script:
+        - cargo build --verbose
+    - name: cargo check
+      script:
+        - cargo check --target wasm32-unknown-unknown
+    - name: cargo test
+      script:
+        - cargo test --verbose
+
 cache: cargo