Added travis config

.travis.yml

@@ -0,0 +1,24 @@
+language: rust
+dist: trusty
+addons:
+    apt:
+        packages:
+            - libssl-dev
+cache: cargo
+rust:
+  - stable
+  - beta
+  - nightly
+matrix:
+  allow_failures:
+    - rust: nightly
+script:
+- cargo clean
+- cargo build
+- cargo test
+
+after_success: |
+  if [[ "$TRAVIS_RUST_VERSION" == stable ]]; then
+    cargo install cargo-tarpaulin
+    cargo tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID
+  fi