Add agents.md guideline for using ASD-STE100 in documentation

agents.md

@@ -0,0 +1 @@
+Use ASD-STE100 Simplified Technical English for content outside of the code like comments, PR description, PR title, github comments.

main.go

@@ -177,15 +177,8 @@ func Build(pkgName, outpath string, config *compileopts.Config) error {
 				// Pick a default output path based on the main directory.
 				outpath = filepath.Base(result.MainDir) + config.DefaultBinaryExtension()
 			}
-		} else if fi, statErr := os.Stat(outpath); statErr == nil && fi.IsDir() {
-			var name string
-			if strings.HasSuffix(pkgName, ".go") {
-				name = filepath.Base(pkgName[:len(pkgName)-3]) + config.DefaultBinaryExtension()
-			} else {
-				name = filepath.Base(result.MainDir) + config.DefaultBinaryExtension()
-			}
-			outpath = filepath.Join(outpath, name)
 		}
+
 		if err := os.Rename(result.Binary, outpath); err != nil {
 			// Moving failed. Do a file copy.
 			inf, err := os.Open(result.Binary)