Initial README (#120)

* initial readme + logging and output fixes to support descriptions

* minor tweaks to README descriptions

* simplify phrasing

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* add comment for example gif

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* spelling fix

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* update phrasing

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* simplify TODO note

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* grammar fix

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* phrase fix

Co-authored-by: Alfredo Deza <adeza@anchore.com>

* rm readme bash block indicators

* clarify config examples are default values

* rm value

Co-authored-by: Alfredo Deza <adeza@anchore.com>

Co-authored-by: Alfredo Deza <adeza@anchore.com>

syft/cataloger/apkdb/parse_apk_db.go

@@ -7,9 +7,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/mitchellh/mapstructure"
-
 	"github.com/anchore/syft/syft/pkg"
+	"github.com/mitchellh/mapstructure"
 )
 
 func parseApkDB(_ string, reader io.Reader) ([]pkg.Package, error) {

syft/scope/option.go

@@ -25,7 +25,7 @@ func ParseOption(userStr string) Option {
 	switch strings.ToLower(userStr) {
 	case strings.ToLower(SquashedScope.String()):
 		return SquashedScope
-	case strings.ToLower(AllLayersScope.String()):
+	case "all-layers", strings.ToLower(AllLayersScope.String()):
 		return AllLayersScope
 	}
 	return UnknownScope