Major bug fix + fix building PRs on adafruit/travis-ci-arduino (adafruit#27)

* Fix install.sh path

* Fix

* Remove newline

* Fix Arduino IDE reinstall

* Use normal blink instead of BlinkPlus

Author: cleveHEX

.travis.yml

@@ -13,7 +13,7 @@ env:
   global:
      - ARDUINO_IDE_VERSION="1.8.5"
 before_install:
-  - source <(curl -SLs https://raw.githubusercontent.com/${TRAVIS_REPO_SLUG}/${TRAVIS_BRANCH}/install.sh)
+  - source $TRAVIS_BUILD_DIR/install.sh
 script:
   - build_platform esp32
   - build_platform uno

examples/Blink/Blink.ino

@@ -0,0 +1,37 @@
+/*
+  Blink
+
+  Turns an LED on for one second, then off for one second, repeatedly.
+
+  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
+  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
+  the correct LED pin independent of which board is used.
+  If you want to know what pin the on-board LED is connected to on your Arduino
+  model, check the Technical Specs of your board at:
+  https://www.arduino.cc/en/Main/Products
+
+  modified 8 May 2014
+  by Scott Fitzgerald
+  modified 2 Sep 2016
+  by Arturo Guadalupi
+  modified 8 Sep 2016
+  by Colby Newman
+
+  This example code is in the public domain.
+
+  http://www.arduino.cc/en/Tutorial/Blink
+*/
+
+// the setup function runs once when you press reset or power the board
+void setup() {
+  // initialize digital pin LED_BUILTIN as an output.
+  pinMode(LED_BUILTIN, OUTPUT);
+}
+
+// the loop function runs over and over again forever
+void loop() {
+  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
+  delay(1000);                       // wait for a second
+  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
+  delay(1000);                       // wait for a second
+}

examples/BlinkPlus/BlinkPlus.ino

@@ -34,6 +34,7 @@ if [ -z $ARDUINO_IDE_VERSION ]; then export ARDUINO_IDE_VERSION="1.8.5"; fi
 # if newer version is requested
 if [ ! -f $HOME/arduino_ide/$ARDUINO_IDE_VERSION ] && [ -f $HOME/arduino_ide/arduino ]; then
 shopt -s extglob
+cd $HOME/arduino_ide/
 rm -r -f !(esp32)
 cd $OLDPWD
 echo "DIFFERENT VERSION OF ARDUINO IDE REQUESTED!"