Adicona travis ci e aumenta o Rbuildignore.

.Rbuildignore

@@ -4,6 +4,9 @@
 ^\.Rproj\.user$
 ^\.gitlab-ci.yml$
 ^data-raw$
+^.build_package.R$
+^.gitlab-ci.yml$
+^.travis.yml$
 Rplots.pdf
 README.*
 STYLEGUIDE.*
@@ -13,4 +16,4 @@ _output.yaml
 ci-c3sl.R
 roteiro.R
 style.css
-plano.*
\ No newline at end of file
+plano.*

.travis.yml

+language: r
+cache: packages
+cran: http://cran-r.c3sl.ufpr.br/
+warnings_are_errors: false
+r_packages:
+ - roxygen2