Auto-commit after successful build: update app gameplay/UI, improve build setup

Changed files:\napp/build.gradle.kts
app/src/main/java/solutions/tretter/githugandroid/GitRuntime.kt

app/src/main/java/solutions/tretter/githugandroid/GitRuntime.kt

@@ -90,6 +90,10 @@ class GitRepositoryRuntime(private val context: Context) {
     }
 
     fun gitManPage(level: Level, currentRepo: RepoState, topic: String): String {
+        if (topic == "ignore") {
+            return fallbackManPage(topic)
+        }
+
         val nativeGit = nativeGitBinary()
         if (nativeGit == null) {
             return fallbackManPage(topic)
@@ -317,6 +321,26 @@ class GitRepositoryRuntime(private val context: Context) {
                     git commit -m <message>
                     git commit --amend
             """.trimIndent()
+            "ignore" -> """
+                NAME
+                    gitignore - Specifies intentionally untracked files to ignore
+
+                SYNOPSIS
+                    $'GIT_DIR/info/exclude', .gitignore
+
+                DESCRIPTION
+                    A gitignore file specifies intentionally untracked files
+                    that Git should ignore. Each line contains a pattern.
+
+                    Blank lines are ignored. Lines beginning with # are comments.
+                    An optional ! prefix negates a pattern and re-includes a path.
+                    A pattern ending with / matches directories.
+
+                EXAMPLES
+                    *.swp
+                    *.a
+                    !lib.a
+            """.trimIndent()
             else -> """
                 NAME
                     git-$topic