Guibescos/aptos example 2 (#327)

* Add example

* Subfolder for my example

* Ready to merge

* Cleanup

* Gitignore right

* Renaming

* Named address reset

* Bump pyth-common-js

* Cleanup

* More cleanup

* Cleanup

* dev addresses

* Link to addresses

* Rename app

* Add link

* Fix

* refactor

* Renamed

* Rename

* Add import statement for Price

* Update to pass vaa to get_update_fee

* Update README

* Rename directory

* Comments

* Add recency check

* Format

* Cleanup, remove bad practices

* Better comments

* Get rid of recency check

* Update README

Author: guibescos

aptos/example/Move.toml renamed to aptos/examples/fetch_btc_price/Move.toml

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+.aptos
+build

aptos/example/sources/example.move renamed to aptos/examples/fetch_btc_price/sources/example.move

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+[package]
+name = "Examples"
+version = "0.0.0"
+upgrade_policy = "compatible"
+
+[dependencies]
+AptosFramework = { git = "https://github.com/aptos-labs/aptos-core.git", subdir = "aptos-move/framework/aptos-framework/", rev = "main" }
+AptosToken = { git = "https://github.com/aptos-labs/aptos-core.git", subdir = "aptos-move/framework/aptos-token/", rev = "main" }
+Pyth = { git = "https://github.com/pyth-network/pyth-crosschain.git", subdir = "aptos/contracts", rev = "main" }
+
+[addresses]
+# These are testnet addresses https://docs.pyth.network/consume-data/aptos#addresses
+aptos_framework = "0x1"
+mint_nft = "_"
+pyth = "0xaa706d631cde8c634fe1876b0c93e4dec69d0c6ccac30a734e9e257042e81541"
+deployer = "0xb138581594ebd7763cfa3c3e455050139b7304c6d41e7094a1c78da4e6761ed8"
+wormhole = "0x1b1752e26b65fc24971ee5ec9718d2ccdd36bf20486a10b2973ea6dedc6cd197"
+
+[dev-addresses]
+mint_nft = "0xb138581594ebd7763cfa3c3e455050139b7304c6d41e7094a1c78da4e6761ed8"
+pyth = "0xe2f37b8ac45d29d5ea23eb7d16dd3f7a7ab6426f5a998d6c23ecd3ae8d9d29eb"
+deployer = "0x277fa055b6a73c42c0662d5236c65c864ccbf2d4abd21f174a30c8b786eab84b"
+wormhole = "0x251011524cd0f76881f16e7c2d822f0c1c9510bfd2430ba24e1b3d52796df204"

aptos/examples/mint_nft/.gitignore

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+# Example Full-Stack App: 100$ USD Mint
+
+The goal of this contract is managing an NFT mint where the mint is paid in native currency but the cost of one NFT is always 100$.
+This example is intended to be run on Aptos testnet because it depends on Pyth and Wormhole existing onchain.
+
+### Important files : 
+- `./sources/minting.move` has the smart contract logic (the code that will run onchain)
+- `./app/src/App.tsx` has the React application. The core logic of how the frontend will interact with the wallet and the blockchain.
+Both combined contain the key pieces of code needed to make an Aptos fullstack app using Pyth!
+
+### How to deploy the smart contract :
+
+- Use `aptos init` with rest_url : `https://testnet.aptoslabs.com/` and faucet `https://faucet.testnet.aptoslabs.com`  to generate a new keypair.
+- Use a faucet to airdrop testnet APT to your newly created account by calling `aptos account fund-with-faucet --account default`. If this doesn't work, I have had success importing my private key from `.aptos/config.yaml` into Petra and clicking the airdrop button. Otherwise send APT from another account.
+- Get your account address from `.aptos/config.yaml` and replace `mint_nft="_"` by `mint_nft="<ADDRESS>"` in `Move.toml`
+- `aptos move compile`
+- `aptos move publish` 
+
+### How to run the webapp :
+
+- In `app/src/App.tsx` replace `const MINT_NFT_MODULE = "_"` by `const MINT_NFT_MODULE = "<ADDRESS>"` the address of your module from above.
+- `npm install`
+- `npm run start`
+- Go to `http://localhost:3000/` in your browser and use Petra wallet to transact with the app.

aptos/examples/mint_nft/Move.toml

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*