Add a nice README

Signed-off-by: baalajimaestro <me@baalajimaestro.me>

README.md

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+# Nim Censor Bot
+
+This Telegram Bot, can easily enable you to send NSFW/Spoiler Media in a chat that is not intended for it.
+It makes the viewer to view it in the personal message of the bot.
+
+You can send it photo, video, album, gif, sticker and forward the response from the bot to any chat.
+
+A live version is available [here](https://t.me/nonozonebot)
+
+Configuration Variables (All are fetched from Environment Variables):
+
+- `TELEGRAM_TOKEN`: Get one from @BotFather
+- `DB_HOST`: A filename for sqlite, or url for postgres host
+- `DB_USER`: DB Username, for postgres only
+- `DB_PASS`: DB Password, for postgres only
+- `DB_NAME`: DB Name, for postgres only
+- `ADMIN_ID`: A comma-separated variable which will allow you and enlisted others to moderate the bot
+
+This bot would not have been possible without the help of:
+
+- @trueleo
+- @DavideGalilei
+- @yardanico