Add MD005, MD007 with tests.

lib/rules.js

@@ -4,6 +4,11 @@ function lineNumberFrom(token) {
   return token.lines[0] + 1;
 }
 
+function indentFrom(token, lines) {
+  var line = lines[token.lines[0]];
+  return line.length - line.trimLeft().length;
+}
+
 function headingStyleFrom(token, lines) {
   if ((token.lines[1] - token.lines[0]) === 1) {
     if (lines[token.lines[0]].match(/#\s*$/)) {
@@ -107,6 +112,45 @@ module.exports = [
     }
   },
 
+  {
+    "name": "MD005",
+    "desc": "Inconsistent indentation for list items at the same level",
+    "func": function MD005(params, errors) {
+      var listItems = params.tokens.filter(function filterToken(token) {
+        return (token.type === "list_item_open");
+      });
+      var indentLevels = [];
+      listItems.forEach(function forToken(token) {
+        var indentLevel = indentFrom(token, params.lines);
+        if (!indentLevels[token.level]) {
+          indentLevels[token.level] = indentLevel;
+        } else if (indentLevel !== indentLevels[token.level]) {
+          errors.push(lineNumberFrom(token));
+        }
+      });
+    }
+  },
+
+  {
+    "name": "MD007",
+    "desc": "Unordered list indentation",
+    "func": function MD007(params, errors) {
+      var optionsIndent = params.options.indent || 2;
+      var bulletLists = params.tokens.filter(function filterToken(token) {
+        return (token.type === "bullet_list_open");
+      });
+      var prevIndent = 0;
+      bulletLists.forEach(function forToken(token) {
+        var indent = indentFrom(token, params.lines);
+        if ((indent > prevIndent) &&
+            ((indent - prevIndent) !== optionsIndent)) {
+          errors.push(lineNumberFrom(token));
+        }
+        prevIndent = indent;
+      });
+    }
+  },
+
   {
     "name": "MD031",
     "desc": "Fenced code blocks should be surrounded by blank lines",

test/bulleted_list_2_space_indent.json

@@ -0,0 +1,6 @@
+{
+  "default": true,
+  "MD007": {
+    "indent": 4
+  }
+}

test/bulleted_list_2_space_indent.md

@@ -0,0 +1,6 @@
+This is a document where the lists are indented by 2 spaces, but the style is
+set to 4 space indents for lists:
+
+* Test X
+  * Test Y {MD007}
+    * Test Z {MD007}

test/bulleted_list_4_space_indent.md

@@ -0,0 +1,3 @@
+* Test X
+    * Test Y {MD007}
+        * Test Z {MD007}

test/inconsistent_bullet_indent_same_level.md

@@ -0,0 +1,4 @@
+* Item
+    * Item {MD007}
+  * Item {MD005}
+    * Item