Coerce docfx into building API documentation

Temporary fix while waiting on dotnet/docfx#1254

.gitignore

@@ -202,4 +202,7 @@ project.lock.json
 /docs/_build
 *.pyc
 /.editorconfig
-.vscode/
+.vscode/
+docs/api/\.manifest
+
+\.idea/

docs/docfx.json

@@ -5,7 +5,7 @@
         {
           "src": "..",
           "files": [
-            "src/**project.json"
+            "src/**/*.cs"
           ],
           "exclude": [
             "**/obj/**",
@@ -66,7 +66,7 @@
       "default"
     ],
     "globalMetadata": {
-      "_appFooter": "Discord.Net (c) 2015-2016"
+      "_appFooter": "Discord.Net (c) 2015-2017"
     },
     "noLangKeyword": false
   }

docs/filterConfig.yml

@@ -6,4 +6,6 @@ apiRules:
 - exclude:
     uidRegex: ^Discord\.Net\.Converters$
 - exclude:
-    uidRegex: ^Discord\.Net.*$
+    uidRegex: ^Discord\.Net.*$
+- exclude:
+    uidRegex: ^RegexAnalyzer$