Add a README file to Manga Plus. (#10579)

src/all/mangaplus/README.md

@@ -0,0 +1,22 @@
+# MANGA Plus by SHUEISHA
+
+Table of Content
+- [FAQ](#FAQ)
+  - [Why chapters are missing in some titles?](#why-chapters-are-missing-in-some-titles)
+  - [Why disabling split pages setting does not work?](#why-disabling-split-pages-setting-does-not-work)
+
+## FAQ
+
+### Why chapters are missing in some titles?
+
+MANGA Plus does not host all chapters due to their licensing politics. The website
+is designed to let the users read the weekly/monthly official simulreleases. If you want
+to read old chapters of a series that does not have the complete list, you need to find
+another sources.
+
+### Why disabling split pages setting does not work?
+
+The MANGA Plus API does not have the support to disabling the dual page split in
+all chapters, besides the extension parsing the correct parameter value in the requests.
+This is something that unfortunately can't be fixed on the extension side yet.
+

src/all/mangaplus/build.gradle

@@ -6,7 +6,7 @@ ext {
     extName = 'MANGA Plus by SHUEISHA'
     pkgNameSuffix = 'all.mangaplus'
     extClass = '.MangaPlusFactory'
-    extVersionCode = 27
+    extVersionCode = 28
 }
 
 dependencies {