Test all examples on CI

Author: jeroen

.travis.yml

@@ -3,6 +3,7 @@ cache: packages
 latex: false
 fortran: false
 pandoc: false
+r_check_args: '--run-donttest'
 
 matrix:
   include:

appveyor.yml

@@ -16,7 +16,12 @@ install:
   - rustc -V
   - cargo -V
 
-# Adapt as necessary starting from here
+environment:
+  matrix:
+    - R_VERSION: release
+      R_CHECK_ARGS: '--no-manual --run-donttest'
+    - R_VERSION: devel
+      R_CHECK_ARGS: '--no-manual --run-donttest'
 
 build_script:
   - travis-tool.sh install_deps