cloud-hypervisor: Add basic Travis based CI

We only run builds, tests and static checks for now.

Fixes: #7

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

.travis.yml

@@ -0,0 +1,14 @@
+language: rust
+
+rust:
+  - stable
+
+before_script:
+  - rustup component add clippy
+  - rustup component add rustfmt
+
+script:
+  - cargo build --release
+  - cargo test
+  - cargo clippy --all-targets --all-features -- -D warnings
+  - cargo fmt --all -- --check