Finalized user manual and bug fixes

mainly added button/keyboard icon sprites

Assets/Prefabs/Player Camera.prefab

@@ -13,7 +13,6 @@ GameObject:
   - component: {fileID: 6424610952174831536}
   - component: {fileID: 1959672341225110449}
   - component: {fileID: 1277363986118001863}
-  - component: {fileID: 6667330442232207831}
   - component: {fileID: 144575015051226799}
   m_Layer: 0
   m_Name: Player Camera
@@ -154,19 +153,9 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   weight: 0.5
   speed: 0.1
+  lowerBound: 0
   winScene: 0
---- !u!114 &6667330442232207831
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 2927715701766480068}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: f2ee5d10b5d7770438ac142d5edd40cc, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
+  staticCamera: 0
 --- !u!114 &144575015051226799
 MonoBehaviour:
   m_ObjectHideFlags: 0