BUILDING.md: Added info about incremental compiling, cleaning after switching branches #1475
When I started developing with JRuby I didn't know how to do a quick incremental compilation. I ran "mvn package" after every change to any Java code. Thankfully, @mkristian told me how to do it in this comment:
@mkristian also said it would be necessary to clean the build after switching branches (i.e. from master to jruby-1_7) and I have confirmed that it is necessary with an experiment, as discussed in issue #1470.
I think it would be helpful to other new JRuby developers if this information was in BUILDING.md, so I made this pull request to add it. I really don't know much about Maven or Java compilation but hopefully I got this right.
This pull request goes to the jruby-1_7 branch, which I think is the right way to do it. It should be merged into master too so people can see it easily on github. Thanks!
…ntence about cleaning after switching branches. This information is derived from a comment by mkristian: #1470 (comment)