added "libudunits2-dev" to installation

serhatcevikel · web-flow · commit 92f69d9ac1e6 · 2019-06-30T16:02:07.000+03:00
Build of "units" package in travis throws the error:

"Configuration failed because libudunits2.so was not found. Try installing:
    * deb: libudunits2-dev (Debian, Ubuntu, ...)
    * rpm: udunits2-devel (Fedora, EPEL, ...)
    * brew: udunits (OSX)
"
diff --git a/.travis.yml b/.travis.yml
@@ -1,3 +1,6 @@
+before_install:
+  - sudo apt-get install -y libudunits2-dev
+  
 language: R
 cache:
   packages: true
