Remove old (broken) import program.

Rename new import CLI to just use prior 'import' naming
Change new import program to also create emoji.json file is users want to use that for other purposes instead of the built-in map.
Tweak existing README to reference new import and its datasource

README.md

@@ -9,7 +9,7 @@ A collection of useful functions for working with emoji. For example: look up th
  - [x] Look up the definition of a single emoji
  - [x] Look up the definitions for a list of emojis
  - [x] Remove all emoji from a string
- - [x] Import tool to update Emoji data with [Emojipedia](http://emojipedia.org/) specs
+ - [x] Import tool to update Emoji data from [Unicode.org](https://unicode.org/Public/emoji/15.1/emoji-test.txt) specs
  - [x] Find the location of and occurrences of a specific emoji in a string
 
 ## Examples
@@ -76,4 +76,4 @@ output := emoji.RemoveAll(input)
 ```
 
 ### Updating the Emoji definitions data file
-Definitions of each emoji can be found in the `data/emoji.json` file. This JSON file is unmarshalled into a map at runtime with the emoji's hex representation as it's key. You can update the definitions file using definitions from [Emojipedia](http://emojipedia.org/) with the `import` program bundled with this package. You can find it at `import/main.go`.
+Definitions of each emoji can be found in the `data/emoji.json` file. This JSON file is unmarshalled into a map at runtime with the emoji's hex representation as it's key. You can update the definitions file `import` program bundled with this package. You can find it at `import/main.go`.  It updates emoji.json (if you want to use this), as well as emojidata.go which is compiled into the package.