Readd lost .Rbuildignore

Change-Id: I502d9a233254358c7b7ed7536d5ae00b1914f366
diff --git a/.Rbuildignore b/.Rbuildignore
new file mode 100644
index 0000000..c5d51fc
--- /dev/null
+++ b/.Rbuildignore
@@ -0,0 +1,10 @@
+^.*\.Rproj$
+^\.Rproj\.user$
+^Readme.md
+^cran-comments.md
+^LICENSE\.md$
+^\.github$
+^pkgdown$
+^docs$
+^_pkgdown\.yml$
+^CRAN-RELEASE$