diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..807ea25
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.Rproj.user
+.Rhistory
+.RData
diff --git a/R/GCAT/GCAT.Rproj b/R/GCAT/GCAT.Rproj
index 5a4617f..eaa6b81 100644
--- a/R/GCAT/GCAT.Rproj
+++ b/R/GCAT/GCAT.Rproj
@@ -13,5 +13,6 @@ RnwWeave: Sweave
 LaTeX: pdfLaTeX
 
 BuildType: Package
+PackageUseDevtools: Yes
 PackageInstallArgs: --no-multiarch --with-keep.source
 PackageRoxygenize: rd,collate,namespace