minor improvements

Author: inc8877

.gitignore

@@ -1,2 +1 @@
-*.DS_Store
-*.meta
+*.DS_Store

CHANGELOG.md

@@ -0,0 +1,20 @@
+# Changelog
+
+## v1.0.2
+
+### Added
+
+- `OpenUPM` support
+- `CHANGELOG`
+
+---
+
+## v1.0.1
+
+### Added
+
+- ScriptingDefineSymbols checking improved
+
+### Fixed
+
+- Build errors

CHANGELOG.md.meta

@@ -1,5 +1,5 @@
 {
-    "name": "Unity.DebugModeDefineSymbol.Editor",
+    "name": "inc8877.DebugModeDefineSymbol.Editor",
     "rootNamespace": "",
     "references": [],
     "includePlatforms": [

Editor.meta

@@ -1,16 +1,29 @@
 # UnityDebugModeDefineSymbol
-A useful tool for running specific code <br>
+
+A useful tool for running specific code  
 [What it is?](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-if)
 
+## Table of Contents
+
+- [UnityDebugModeDefineSymbol](#unitydebugmodedefinesymbol)
+  - [Table of Contents](#table-of-contents)
+  - [Compatibility](#compatibility)
+  - [How to use](#how-to-use)
+  - [Installation](#installation)
+    - [Install via OpenUPM](#install-via-openupm)
+    - [Install via Git URL](#install-via-git-url)
 
-### Compatibility
-|  Unity  | Compatible |
-|:-------:|:----------:|
-|  2020   |:white_check_mark:|
-|  2019   |:white_check_mark:|
+## Compatibility
+
+| Unity |     Compatible     |
+| :---: | :----------------: |
+| 2021  | :white_check_mark: |
+| 2020  | :white_check_mark: |
+| 2019  | :white_check_mark: |
 
 ## How to use
-1. Add source code of this repo to your project
+
+1. Add this tool to your project [[how](#installation)]
 2. Manage debug mode by following this path `Tools -> Debug Mode Definition ->` `On` / `Off`
 <img width="372" alt="choiceDiaologWindow_DebugMode" src="https://user-images.githubusercontent.com/29813954/111028008-6c7c1300-83fc-11eb-83f5-49093ae5c7da.png">
 
@@ -23,3 +36,25 @@ A useful tool for running specific code <br>
 #endif
 // ... code somewhere
 ```
+
+## Installation
+
+### Install via OpenUPM
+
+The package is available on the [openupm](https://openupm.com) registry. It's recommended to install it via [openupm-cli](https://github.com/openupm/openupm-cli).
+
+```c#
+openupm add com.inc8877.unity-debug-mode-define-symbol
+```
+
+### Install via Git URL
+
+Open `Packages/manifest.json` with your favorite text editor. Add the following line to the dependencies block.
+
+```c#
+{
+  "dependencies": {
+    "com.inc8877.unity-debug-mode-define-symbol": "https://github.com/inc8877/UnityDebugModeDefineSymbol.git",
+   }
+}
+```