compile with esp mqtt lib

lib/AsyncTCP/.travis.yml

@@ -0,0 +1,34 @@
+sudo: false
+language: python
+os:
+  - linux
+
+git:
+  depth: false
+
+stages:
+  - build
+
+jobs:
+  include:
+
+    - name: "Arduino Build"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: bash $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh
+
+    - name: "PlatformIO Build"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: bash $TRAVIS_BUILD_DIR/.github/scripts/on-push.sh 1 1
+
+notifications:
+  email:
+    on_success: change
+    on_failure: change
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/60e65d0c78ea0a920347
+    on_success: change  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: false     # default: false