Enable Spotlight indexing of Markdown in El Capitan without disabling SIP

Markdown.mdimporter.patch

diff -ru RichText.mdimporter/Contents/Info.plist Markdown.mdimporter/Contents/Info.plist
--- RichText.mdimporter/Contents/Info.plist	2015-11-23 16:14:12.000000000 +0200
+++ Markdown.mdimporter/Contents/Info.plist	2015-11-23 16:10:03.000000000 +0200
@@ -13,15 +13,7 @@
 			<string>MDImporter</string>
 			<key>LSItemContentTypes</key>
 			<array>
-				<string>public.rtf</string>
-				<string>public.html</string>
-				<string>public.xml</string>
-				<string>public.plain-text</string>
-				<string>com.apple.traditional-mac-plain-text</string>
-				<string>com.apple.rtfd</string>
-				<string>com.apple.webarchive</string>
-				<string>org.oasis-open.opendocument.text</string>
-				<string>org.openxmlformats.wordprocessingml.document</string>
+				<string>net.daringfireball.markdown</string>
 			</array>
 		</dict>
 	</array>
@@ -30,11 +22,11 @@
 	<key>CFBundleGetInfoString</key>
 	<string>1.0, Copyright (c) 2004-2010 Apple Inc.</string>
 	<key>CFBundleIdentifier</key>
-	<string>com.apple.MDImporter.RichText</string>
+	<string>com.apple.MDImporter.Markdown</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>Rich Text Sniffer</string>
+	<string>Markdown Sniffer</string>
 	<key>CFBundleShortVersionString</key>
 	<string>6.9</string>
 	<key>CFBundleSupportedPlatforms</key>