update example in README

fix #9

README.md

@@ -56,6 +56,17 @@ An Algorand transaction can consist of a list of individual parts, known as *ato
 
 To be able to perform the signing process, you need to provide a `keys.json` file of the following format. Be careful that all private information here is saved in plain text so **DO NOT USE THEM ON MAINNET**.
 
+#### Algorand smart contract
+
+We provided an example project to demostrate how to use this extension to work on Algorand smart contract.
+
+1. Open the `example` as the project root folder;
+2. Open the file `main.py` and press `Cmd+Shift+B` to compile the PyTeal script to TEAL. A file of name `main.teal` will be generated;
+3. Open the file `main.teal` and press `Cmd+Shift+B` to compile the TEAL script;
+4. Open the *Algorand Panel* and start an Algorand node. Make sure the node has synced with the network;
+5. Import the transaction by selecting the file `txns/call_contract.json`;
+6. Click the *Push Transaction* button to push the transaction
+
 ``` js
 [
 	{
@@ -79,6 +90,7 @@ When finished, click the *Push Transaction* button, confirm and send the transac
 ```
 .
 ├── package.json // The extension manifest.
+├── example // example project with transaction objects
 ├── client
 │   ├── src
 │   │   ├── view // The frontend for Algorand Panel (React)

example/main.py

@@ -1,12 +1,12 @@
 from pyteal import *
 
 #template variables
-tmpl_amt = Int(1000000)
-tmpl_rcv = Addr("IRSQTDADXKRE66ZIDODB4EENNOBOS2YW4NYZV6QZGUAAWIMN3JCAPTS5DY") # paste a receiver address
+tmpl_amt = Int(1000000) # equals 1 ALGO
+tmpl_rcv = Addr("IRSQTDADXKRE66ZIDODB4EENNOBOS2YW4NYZV6QZGUAAWIMN3JCAPTS5DY")
 tmpl_cls = Addr("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAY5HFKQ")
-tmpl_fv = Int(8000000)
-tmpl_lv = Int(8888888)
-tmpl_lease = Bytes("base64", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE=")
+# tmpl_fv = Int(8000000)
+# tmpl_lv = Int(8888888)
+# tmpl_lease = Bytes("base64", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE=")
 
 def dynamic_fee(tmpl_amt=tmpl_amt,
     tmpl_rcv=tmpl_rcv,
@@ -27,7 +27,7 @@ def dynamic_fee(tmpl_amt=tmpl_amt,
         Txn.close_remainder_to() == tmpl_cls,
         # Txn.first_valid() == tmpl_fv,
         # Txn.last_valid() == tmpl_lv,
-        Txn.lease() == tmpl_lease
+        # Txn.lease() == tmpl_lease
     )
 
     return dynamic_fee_core

example/txns/call_contract.json

@@ -15,8 +15,7 @@
       "params": {
         "from": "LEK4LPP5IRJDRDQIXFTWLBWPJXJGBHW23FB4KP2LBONW6JMWTLN4GMKCMM",
         "to": "IRSQTDADXKRE66ZIDODB4EENNOBOS2YW4NYZV6QZGUAAWIMN3JCAPTS5DY",
-        "amount": 1,
-        "lease": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAE="
+        "amount": 1
       },
       "flatFee": true,
       "lsig": {