[RTI-5814] Add Travis integration (#19)

* Add Travis integration

* Debugging

* Rearrange rebar.config just in case

* Revert "Rearrange rebar.config just in case"

This reverts commit 06a407c.

* Revert "Debugging"

This reverts commit 1b212c4.

* Don't use rebar3 alias… no idea why it doesn't work, but it doesn't

* Use a newer rebar3 version

* Actually use the new version

.travis.yml

@@ -0,0 +1,18 @@
+language: erlang
+
+os:
+  - linux
+
+otp_release:
+   - 20.3
+   - 21.3
+
+notifications:
+  email: [email protected]
+
+script:
+  - rebar3 local upgrade
+  - export PATH=/home/travis/.cache/rebar3/bin:$PATH
+  - rebar3 --version
+  - erl -version
+  - rebar3 test