add top-level cmake script for docs

CMakeInstallDocs.txt

@@ -0,0 +1,22 @@
+#
+# CMakeInstallDocs.txt
+#
+# Copyright (C) 2009-12 by RStudio, Inc.
+#
+# Unless you have received this program directly from RStudio pursuant
+# to the terms of a commercial license agreement with RStudio, then
+# this program is licensed to you under the terms of version 3 of the
+# GNU Affero General Public License. This program is distributed WITHOUT
+# ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
+# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
+# AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
+#
+#
+
+install(FILES README.md
+              INSTALL
+              COPYING
+              NOTICE
+              ${CMAKE_CURRENT_BINARY_DIR}/SOURCE
+              ${CMAKE_CURRENT_BINARY_DIR}/VERSION
+        DESTINATION ${RSTUDIO_INSTALL_SUPPORTING})

CMakeLists.txt

@@ -41,13 +41,7 @@ if (NOT RSTUDIO_SESSION_WIN64)
                   ${CMAKE_CURRENT_BINARY_DIR}/VERSION)
 
    # install root docs
-   install(FILES README.md
-                 INSTALL
-                 COPYING
-                 NOTICE
-                 ${CMAKE_CURRENT_BINARY_DIR}/SOURCE
-                 ${CMAKE_CURRENT_BINARY_DIR}/VERSION
-           DESTINATION ${RSTUDIO_INSTALL_SUPPORTING})
+   include(CMakeInstallDocs.txt)
 endif()
 
 # overlay