nhentai icon (#270)

* nhentai icon

src/all/nhentai/build.gradle

@@ -5,9 +5,9 @@ ext {
     appName = 'Tachiyomi: nhentai'
     pkgNameSuffix = "all.nhentai"
     extClass = '.NHJapanese; .NHEnglish; .NHChinese; .NHSpeechless; .NHCzech; .NHEsperanto; .NHMongolian; .NHSlovak; .NHArabic; .NHUkrainian'
-    extVersionCode = 1
-    extVersionSuffix = 1
-    libVersion = '1.0'
+    extVersionCode = 2
+    extVersionSuffix = 0
+    libVersion = '1.2'
 }
 
 dependencies {