Merge pull request #1568 from rocker-org/feature/r-base-3.2.4

update r-base to R 3.2.4-revised released on March 16

library/r-base

@@ -1,6 +1,6 @@
 # maintainer: "Carl Boettiger" <[email protected]> (@cboettig)
 # maintainer: "Dirk Eddelbuettel" <[email protected]> (@eddelbuettel)
 
-3.2.3: git://github.com/rocker-org/rocker@eeb9c8a5f416f7cfe982734440e39fa72abbcb33 r-base
-latest: git://github.com/rocker-org/rocker@eeb9c8a5f416f7cfe982734440e39fa72abbcb33 r-base
+3.2.4: git://github.com/rocker-org/rocker@0cc8fb084f2b78a00f6741e1080d9b23f32424c8 r-base
+latest: git://github.com/rocker-org/rocker@0cc8fb084f2b78a00f6741e1080d9b23f32424c8 r-base