Added Visual Studio theme
Added Visual Studio theme

It is like the default one, except that string literals are red (as in
the default highlighting of Visual Studio 2012)

zygzyp/syntaxhighlighter,syntaxhighlighter/syntaxhighlighter,syntaxhighlighter/syntaxhighlighter,Adai0808/syntaxhighlighter,nullice/syntaxhighlighter,norux/syntaxhighlighter,2947721120/syntaxhighlighter,DustinH/syntaxhighlighter,glabcn/syntaxhighlighter,2947721120/syntaxhighlighter,JulianVolodia/syntaxhighlighter,wang508x102/syntaxhighlighter,Adai0808/syntaxhighlighter,JulianVolodia/syntaxhighlighter,tgckpg/BotanJS-SyntaxHighlighter,whouses/syntaxhighlighter,norux/syntaxhighlighter,wang508x102/syntaxhighlighter,younisd/syntaxhighlighter,nullice/syntaxhighlighter,liuxulei/syntaxhighlighter,jonesgithub/syntaxhighlighter,whouses/syntaxhighlighter,liuxulei/syntaxhighlighter,younisd/syntaxhighlighter,jonesgithub/syntaxhighlighter,DustinH/syntaxhighlighter,glabcn/syntaxhighlighter,JungMinu/syntaxhighlighter,JungMinu/syntaxhighlighter,raviji/syntaxhighlighter,zygzyp/syntaxhighlighter,raviji/syntaxhighlighter