2d/platformer works flawlessly on Godot 3.1 beta 8 (#310)

* 2d/platformer works flawlessly on Godot 3.1 beta 8
* fix warnings for inferred node type
* every script has a class_name
* formatted code for better clarity
* each files has its own subfolder

* As suggested by @akien-mga
* states are back to const instead of enum
* class_name comes after extends
* better code style

* PascalCase for nodes

Author: testdotcom

2d/platformer/Stage.tscn

@@ -0,0 +1,15 @@
+[remap]
+
+importer="ogg_vorbis"
+type="AudioStreamOGGVorbis"
+path="res://.import/music.ogg-552a37c4bfe46d894cb8004cf1c345ad.oggstr"
+
+[deps]
+
+source_file="res://audio/music.ogg"
+dest_files=[ "res://.import/music.ogg-552a37c4bfe46d894cb8004cf1c345ad.oggstr" ]
+
+[params]
+
+loop=true
+loop_offset=0

2d/platformer/tileset.tres renamed to 2d/platformer/TileSet.tres

@@ -0,0 +1,21 @@
+[remap]
+
+importer="wav"
+type="AudioStreamSample"
+path="res://.import/sound_coin.wav-e18cceeba8b7dc02bbb940b85bcad99a.sample"
+
+[deps]
+
+source_file="res://audio/sound_coin.wav"
+dest_files=[ "res://.import/sound_coin.wav-e18cceeba8b7dc02bbb940b85bcad99a.sample" ]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=true
+edit/normalize=true
+edit/loop=false
+compress/mode=0

2d/platformer/tileset_edit.tscn renamed to 2d/platformer/TilesetEdit.tscn

@@ -0,0 +1,21 @@
+[remap]
+
+importer="wav"
+type="AudioStreamSample"
+path="res://.import/sound_explode.wav-536668d880bfb277b9e5253774598e9e.sample"
+
+[deps]
+
+source_file="res://audio/sound_explode.wav"
+dest_files=[ "res://.import/sound_explode.wav-536668d880bfb277b9e5253774598e9e.sample" ]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=true
+edit/normalize=true
+edit/loop=false
+compress/mode=0