Add travis continuous integration system support

Author: paceholder

.travis.yml

@@ -0,0 +1,40 @@
+age: cpp
+
+compiler:
+  - gcc
+
+sudo: required
+dist: trusty
+
+env:
+  #- QT_BASE=51
+  #- QT_BASE=52
+  #- QT_BASE=53
+  #- QT_BASE=54
+  #- QT_BASE=55
+  - QT_BASE=56
+
+before_install:
+  #- if [ "$QT_BASE" = "51" ]; then sudo add-apt-repository ppa:beineri/opt-qt511-trusty -y; fi
+  #- if [ "$QT_BASE" = "52" ]; then sudo add-apt-repository ppa:beineri/opt-qt521-trusty -y; fi
+  #- if [ "$QT_BASE" = "53" ]; then sudo add-apt-repository ppa:beineri/opt-qt532-trusty -y; fi
+  #- if [ "$QT_BASE" = "54" ]; then sudo add-apt-repository ppa:beineri/opt-qt542-trusty -y; fi
+  #- if [ "$QT_BASE" = "55" ]; then sudo add-apt-repository ppa:beineri/opt-qt551-trusty -y; fi
+  - if [ "$QT_BASE" = "56" ]; then sudo add-apt-repository ppa:beineri/opt-qt561-trusty -y; fi
+  - sudo apt-get update -qq
+
+install:
+  #- if [ "$QT_BASE" = "51" ]; then sudo apt-get install -qq qt51base; source /opt/qt51/bin/qt51-env.sh; fi
+  #- if [ "$QT_BASE" = "52" ]; then sudo apt-get install -qq qt52base; source /opt/qt52/bin/qt52-env.sh; fi
+  #- if [ "$QT_BASE" = "53" ]; then sudo apt-get install -qq qt53base; source /opt/qt53/bin/qt53-env.sh; fi
+  #- if [ "$QT_BASE" = "54" ]; then sudo apt-get install -qq qt54base; source /opt/qt54/bin/qt54-env.sh; fi
+  #- if [ "$QT_BASE" = "55" ]; then sudo apt-get install -qq qt55base; source /opt/qt55/bin/qt55-env.sh; fi
+  - if [ "$QT_BASE" = "56" ]; then sudo apt-get install -qq qt56base; source /opt/qt56/bin/qt56-env.sh; fi
+
+script:
+  - mkdir build
+  - cd build
+  - cmake .. && make
+
+notifications:
+  email: false

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.4)
+cmake_minimum_required(VERSION 3.2)
 
 project(NodeEditor)