Exclude search results from robot indices (closes #120)

Change-Id: If6387bb7585afbba80743cad9cfcf8779517c6b3
diff --git a/dev/robots.txt b/dev/robots.txt
new file mode 100644
index 0000000..88e4d02
--- /dev/null
+++ b/dev/robots.txt
@@ -0,0 +1,10 @@
+# robots.txt only applies, when KorAP is accessible
+# from the domain root.
+
+User-agent: *
+Disallow: /api/
+Disallow: /css/
+Disallow: /font/
+Disallow: /js/
+Disallow: /settings/
+Disallow: /corpus/