Add back api folder with a placeholder file.

git-svn-id: https://svn.middleware.georgetown.edu/cpp-xmltooling/branches/REL_1@586 de75baf8-a10c-0410-a50a-987c0e22f00f

diff --git a/doc/api/README.txt b/doc/api/README.txt
new file mode 100644 (file)
index 0000000..1c2015b
--- /dev/null
+++ b/doc/api/README.txt
@@ -0,0 +1 @@
+If no documentation is present, doxygen can be used to generate it.
\ No newline at end of file