Add Travis configuration to verify PAC can be generated

Author: jessebraham

.travis.yml

@@ -0,0 +1,20 @@
+language: rust
+rust:
+ - nightly
+cache: cargo
+dist: "trusty"
+before_install:
+ - python --version
+ - pyenv install 3.6.3
+ - pyenv global 3.6.3
+
+matrix:
+ fast_finish: true
+
+install:
+ - rustup component add rustfmt
+ - pip3 install --upgrade --user svdtools
+ - cargo install form --force
+ - cargo install --git https://github.com/rust-embedded/svd2rust svd2rust --force
+
+script: make clean patch generate form fmt