Merge pull request #2 from jackyjia/feature/1

feature#1: update README

.gitignore

@@ -30,3 +30,6 @@
 *.exe
 *.out
 *.app
+
+# IDE
+.idea

README.md

@@ -1,2 +1,37 @@
 # MySuperLedger
-MySuperLedger aims to enable SME with accounting capability that internet giant such as Alipay, Paypal have
+MySuperLedger aims to enable SMEs with accounting capability that internet giants such as Alipay, PayPal have.
+
+## Why SMEs need accounting feature that big companies have
+The main reason is I believe the pay-as-you-go payment model will lead to a burst of bookkeeping activities which can easily
+reach the same level of traffic and high-availability requirement that only internet giants have.
+
+The accounting capability will be crucial to the success of SMEs that rely on the pay-as-you-go model. However they usually 
+don't have sufficient resources to develop their own accounting software, and existing accounting softwares 
+cannot meet these requirements.
+
+## Why I can do this
+I designed and led the development of the financial accounting system for eBay management payment. The system can handle 1 million transactions
+per second and easily scale out to support even higher throughput. It's also high available, 99.999% available in over two years, 
+that's 7-minutes downtime, a big part of which was caused by mis-operation. Besides, the system can guarantee no data loss, which is
+also a must-have requirement on accounting system. Last but not least, it's 100% audit-able, it will not only tell you the 
+account's latest balance, but also evey transaction that leads to it.
+
+Here're two articles I wrote about the system.
+1. [超越“双十一” | ebay支付核心账务系统架构演进之路](https://mp.weixin.qq.com/s/O5_Rde5uUXvmBS2B7w2hOQ)
+2. [eBay支付账务系统架构解析之“读”一无二](https://mp.weixin.qq.com/s?__biz=MzA3MDMyNDUzOQ==&mid=2650512756&idx=1&sn=04fd97a4c4129bb26c5dd3b6ea7e75f9&chksm=8731a520b0462c369671c63d06721ee7817984bf041964fbdeb24d513c9b31451cbb544ed2c1&scene=178&cur_album_id=1590887959409590275#rd)
+
+## What's incoming
+I'm going to provide following features:
+1. Create an account with COA (Chart of Accounts) support
+2. Create a ledger
+3. Post a transaction to a ledger
+4. Query account's balance
+5. Query the transaction history of a ledger
+
+Stay tuned.
+
+## How to connect
+Feel free to send a message from all below channels. we'd love to discuss your use scenarios and what we can help on that.
+1. telegram: @jiaqifudan
+2. discord: jackyjia
+