Rename a bunch of internal things from frontmatter to meta

meta.go

@@ -2,7 +2,7 @@ package step
 
 import "strings"
 
-const frontMatterRule = "---"
+const metaRule = "---"
 
 // Meta represents optional metadata that can occur at the very start of
 // a document.
@@ -18,25 +18,25 @@ func SplitMeta (input string) (Meta, string, error) {
 	// by line instead of operating directly on the string. have that call
 	// yet another function which will solve #11
 	
-	// stop if there is no front matter
-	if !strings.HasPrefix(input, frontMatterRule + "\n") {
+	// stop if there is no metadata
+	if !strings.HasPrefix(input, metaRule + "\n") {
 		return Meta { }, input, nil
 	}
 
-	// get the start and the end of the front matter
-	input = strings.TrimPrefix(input, frontMatterRule)
-	index := strings.Index(input, "\n" + frontMatterRule + "\n")
+	// get the start and the end of the metadata
+	input = strings.TrimPrefix(input, metaRule)
+	index := strings.Index(input, "\n" + metaRule + "\n")
 	if index < 0 {
 		return nil, "", ErrMetaNeverClosed
 	}
-	frontMatterRaw := input[:index]
-	body           := input[index + len(frontMatterRule) + 2:]
+	metaStr := input[:index]
+	bodyStr := input[index + len(metaRule) + 2:]
 
-	// parse meta
-	meta, err := ParseMeta(frontMatterRaw)
+	// parse metadata
+	meta, err := ParseMeta(metaStr)
 	if err != nil { return Meta { }, "", err }
 	
-	return meta, body, nil
+	return meta, bodyStr, nil
 }
 
 // ParseMeta parses isolated metadata (without the horizontal starting and