Add a macro for projects that don't use Spring Bootstrap
Add a macro for projects that don't use Spring Bootstrap

Many guides are using Spring Bootstrap for build a runnable jar.
This patch includes a macro for putting in a section to describe
how to add the maven-shade-plugin directly for those that don't
get Spring Bootstrap's handy features.

martinlippert/sagan,dsyer/sagan,andriykonoz/sagan,spring-io/sagan,dkushner/sagan,TabberGit/sagan,vizewang/sagan,vizewang/sagan,dvaughn555/sagan,spring-io/sagan,dvaughn555/sagan,dsyer/sagan,gregturn/sagan,mbateman/sagan,spring-io/sagan,yhj630520/sagan,andriykonoz/sagan,dharmaraju/sagan,rwinch/sagan,gregturn/sagan,andriykonoz/sagan,garylgh/sagan,lowtalker/sagan,eonezhang/sagan,dharmaraju/sagan,eonezhang/sagan,eonezhang/sagan,seoilhyun/sagan,amit-siddhu/sagan,TabberGit/sagan,martinlippert/sagan,yhj630520/sagan,BHASKARSDEN277GITHUB/sagan,BHASKARSDEN277GITHUB/sagan,amit-siddhu/sagan,rwinch/sagan,yhj630520/sagan,dsyer/sagan,mbateman/sagan,vizewang/sagan,vizewang/sagan,seoilhyun/sagan,yhj630520/sagan,rwinch/sagan,spring-io/sagan,garylgh/sagan,BHASKARSDEN277GITHUB/sagan,amit-siddhu/sagan,dlizarra/sagan,TabberGit/sagan,seoilhyun/sagan,TabberGit/sagan,dvaughn555/sagan,dharmaraju/sagan,lowtalker/sagan,mbateman/sagan,dkushner/sagan,garylgh/sagan,dkushner/sagan,dlizarra/sagan,amit-siddhu/sagan,andriykonoz/sagan,dharmaraju/sagan,dkushner/sagan,martinlippert/sagan,mbateman/sagan,BHASKARSDEN277GITHUB/sagan,seoilhyun/sagan,garylgh/sagan,dlizarra/sagan,rwinch/sagan,dlizarra/sagan,dvaughn555/sagan,eonezhang/sagan,gregturn/sagan,martinlippert/sagan,dsyer/sagan,lowtalker/sagan,lowtalker/sagan