Add position and size for paragraph

lib/rules_block/paragraph.js

@@ -7,7 +7,8 @@ module.exports = function paragraph(state, startLine/*, endLine*/) {
   var content, terminate, i, l, token,
       nextLine = startLine + 1,
       terminatorRules = state.md.block.ruler.getRules('paragraph'),
-      endLine = state.lineMax;
+      endLine = state.lineMax,
+      pos = state.bMarks[startLine];
 
   // jump line-by-line until empty one or EOF
   for (; nextLine < endLine && !state.isEmpty(nextLine); nextLine++) {
@@ -35,13 +36,19 @@ module.exports = function paragraph(state, startLine/*, endLine*/) {
 
   token          = state.push('paragraph_open', 'p', 1);
   token.map      = [ startLine, state.line ];
+  token.position = pos;
+  token.size     = 0;
 
   token          = state.push('inline', '', 0);
   token.content  = content;
   token.map      = [ startLine, state.line ];
   token.children = [];
+  token.position = pos;
+  token.size     = content.length;
 
   token          = state.push('paragraph_close', 'p', -1);
+  token.size     = 0;
+  token.position = content.length + pos;
 
   return true;
 };