Extractors implemented. Exporters name simplified. README Updated for extracting data. Removed go 1.11 support

extractor/text.go

@@ -0,0 +1,14 @@
+package extractor
+
+import "github.com/PuerkitoBio/goquery"
+
+// Text extracts texts from selected nodes
+type Text struct {
+	Name     string
+	Selector string
+}
+
+// Extract extracts texts from selected nodes
+func (e *Text) Extract(doc *goquery.Document) interface{} {
+	return map[string]string{e.Name: doc.Find(e.Selector).Text()}
+}