Move installation and documentation sections after features
Move installation and documentation sections after features

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@iki.fi>

femtotrader/libtrading,femtotrader/libtrading,libtrading/libtrading,divaykin/libtrading,mstanichenko/libtrading,penberg/libtrading,jvirtanen/libtrading,Bitcoinsulting/libtrading,jvirtanen/libtrading,NunoEdgarGub1/libtrading,etoestja/libtrading,libtrading/libtrading,svdev/libtrading,svdev/libtrading,fengzhyuan/libtrading,divaykin/libtrading,mstanichenko/libtrading,penberg/libtrading,fengzhyuan/libtrading,Bitcoinsulting/libtrading,NunoEdgarGub1/libtrading,etoestja/libtrading