Fixed parsing XML files that contain html entities

For example `echo org.codehaus.plexus:plexus:1.0.4 |
go-maven-resolver` doesn't not work without this change.

Signed-off-by: Jakub Sokołowski <[email protected]>

Author: Mazurel

pom/metadata.go

@@ -30,6 +30,7 @@ func MetadataFromReader(reader io.ReadCloser) (meta *Metadata, err error) {
 	}()
 	decoder := xml.NewDecoder(reader)
 	decoder.CharsetReader = charset.NewReaderLabel
+	decoder.Entity = xml.HTMLEntity
 	err = decoder.Decode(&meta)
 	return
 }

pom/project.go

@@ -30,6 +30,7 @@ func ProjectFromReader(reader io.ReadCloser) (project *Project, err error) {
 	}()
 	decoder := xml.NewDecoder(reader)
 	decoder.CharsetReader = charset.NewReaderLabel
+	decoder.Entity = xml.HTMLEntity
 	err = decoder.Decode(&project)
 	return
 }