Revert "Moved repository to actions"

This reverts commit 2d9bd91.

.travis.yml

@@ -0,0 +1,32 @@
+language: c
+sudo: false
+# Blacklist
+branches:
+  except:
+    - gh-pages
+cache:
+  directories:
+    - ~/arduino_ide
+    - ~/.arduino15/packages/
+git:
+  depth: false
+  quiet: true
+env:
+  global:
+    - PRETTYNAME="Adafruit PCD8544 Nokia 5110 LCD library"
+# Optional, will default to "$TRAVIS_BUILD_DIR/Doxyfile"
+#    - DOXYFILE: $TRAVIS_BUILD_DIR/Doxyfile
+
+before_install:
+   - source <(curl -SLs https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/install.sh)
+
+install:
+   - arduino --install-library "Adafruit GFX Library"
+
+script:
+   - build_main_platforms
+
+# Generate and deploy documentation
+after_success:
+  - source <(curl -SLs  https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/library_check.sh)
+  - source <(curl -SLs  https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/doxy_gen_and_deploy.sh)