Updated all plugins that are non-forked. Added some new plugins.

Added update_plugins.py which can fetch new plugins from GitHub.

New plugins added: zencoding, vim-indent-object, taglist, nginx.vim

sources_non_forked/vim-snippets/snippets/dart.snippets

@@ -0,0 +1,82 @@
+snippet lib
+	#library('${1}');
+	${2}
+snippet im
+	#import('${1}');
+	${2}
+snippet so
+	#source('${1}');
+	${2}
+snippet main
+	static void main() {
+	  ${1:/* code */}
+	}
+snippet st
+	static ${1}
+snippet fi
+	final ${1}
+snippet re
+	return ${1}
+snippet br
+	break;
+snippet th
+	throw ${1}
+snippet cl
+	class ${1:`Filename("", "untitled")`} ${2}
+snippet in
+	interface ${1:`Filename("", "untitled")`} ${2}
+snippet imp
+	implements ${1}
+snippet ext
+	extends ${1}
+snippet if
+	if (${1:true}) {
+	  ${2}
+	}
+snippet ife
+	if (${1:true}) {
+	  ${2}
+	} else {
+	  ${3}
+	}
+snippet el
+	else
+snippet sw
+	switch (${1}) {
+	  ${2}
+	}
+snippet cs
+	case ${1}:
+	  ${2}
+snippet de
+	default:
+	  ${1}
+snippet for
+	for (var ${2:i} = 0, len = ${1:things}.length; $2 < len; ${3:++}$2) {
+	  ${4:$1[$2]}
+	}
+snippet fore
+	for (final ${2:item} in ${1:itemList}) {
+	  ${3:/* code */}
+	}
+snippet wh
+	while (${1:/* condition */}) {
+	  ${2:/* code */}
+	}
+snippet dowh
+	do {
+	  ${2:/* code */}
+	} while (${1:/* condition */});
+snippet as
+	assert(${1:/* condition */});
+snippet try
+	try {
+	  ${2}
+	} catch (${1:Exception e}) {
+	}
+snippet tryf
+	try {
+	  ${2}
+	} catch (${1:Exception e}) {
+	} finally {
+	}