Added no_std_tests to travis

Author: elichai

.travis.yml

@@ -38,6 +38,10 @@ script:
   - cargo test --verbose --release
   - if [ ${TRAVIS_RUST_VERSION} == "stable" ]; then cargo doc --verbose --features="rand,serde,recovery,endomorphism"; fi
   - if [ ${TRAVIS_RUST_VERSION} == "nightly" ]; then cargo test --verbose --benches --features=unstable; fi
+  - if [ ${TRAVIS_RUST_VERSION} == "nightly" -a "$TRAVIS_OS_NAME" = "linux" ]; then 
+    cd no_std_test &&
+    cargo run --release | grep -q "Verified Successfully";
+    fi
   - if [ ${TRAVIS_RUST_VERSION} == "stable" -a "$TRAVIS_OS_NAME" = "linux" ]; then 
     CARGO_TARGET_DIR=cargo_web cargo install --verbose --force cargo-web && 
     cargo web build --verbose --target=asmjs-unknown-emscripten &&