Update .travis.yml

Attempt to fix travis testing based on scde's travis?

.travis.yml

@@ -10,31 +10,28 @@ env:
     - R_BUILD_ARGS="--no-build-vignettes --no-manual"
     - R_CHECK_ARGS="--no-build-vignettes --no-manual --timings"  ## do not build vignettes or manual
     - _R_CHECK_TIMINGS_="0"  ## get the timing information for the examples for all of your functions
+    - _R_CHECK_FORCE_SUGGESTS_="FALSE"  ## Some suggested packages not
+                                        ## available for r-oldrel
 
 r:
  - release
 
-# do not build vignettes...takes too long and times out on travis
-r_build_args: --no-build-vignettes --no-manual
-r_check_args: --no-build-vignettes --no-manual --timings
-
-# catch package installation issues sooner rather than later
-r_packages:
-  - devtools
-  - ggraph
-r_github_packages:
-  - GuangchuangYu/enrichplot # for some reason won't install via bioconductor
-  - JEFworks/HoneyBADGER
-
-# for codecov
-r_packages:
-  - covr
-
 # install jags
 before_install:
   - sudo apt-get install jags
   - sudo apt-get install r-cran-rjags
 
+install:
+  - R -e 'install.packages("devtools")'
+  - R -e 'devtools::install_deps(dependencies = TRUE)'
+  # catch package installation issues sooner rather than later
+  - R -e 'devtools::install_github("JEFworks/HoneyBADGER")'
+
+# do not build vignettes...takes too long and times out on travis
+script:
+  - R CMD build --no-build-vignettes --no-manual .
+  - R CMD check --no-build-vignettes --no-manual --timings *tar.gz
+
 # we need to install BiocInstaller for testing Bioconductor packages
 bioc_required: true