Add simple .gitignore
Add simple .gitignore

When building according to the readme, build artifacts are all under
target/. This change omits that directory from version control.

ss1h2a3tw/wlc,gpyh/wlc,Enerccio/ewlc,gpyh/wlc,Earnestly/wlc,Earnestly/wlc,vially/wlc,Cloudef/wlc,Enerccio/ewlc,ammen99/wlc,yohanesu75/wlc,ammen99/wlc,vially/wlc,Cloudef/wlc,ss1h2a3tw/wlc,yohanesu75/wlc