add sparkup vim plugin

HTML generation with css-selector-like syntax.

.gitmodules

@@ -37,3 +37,6 @@
 [submodule "vim/bundle/repeat"]
 	path = vim/bundle/repeat
 	url = https://github.com/tpope/vim-repeat.git
+[submodule "vim/bundle/sparkup"]
+	path = vim/bundle/sparkup
+	url = https://github.com/bingaman/vim-sparkup.git

vim/bundle/sparkup

@@ -0,0 +1 @@
+Subproject commit 62830e8990b21280a5cc244568065abb085fe395