travis fixes

.travis.yml

@@ -13,6 +13,10 @@ env:
 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
 

library.properties

@@ -7,4 +7,4 @@ paragraph=Adafruit 2.8" TFT display Library
 category=Display
 url=https://github.com/adafruit/TFTLCD-Library
 architectures=*
-depends=
+depends=Adafruit GFX Library