[docs] added ability to add static pages in docs folder and README.md in modules and doctypes

accounts/doctype/account/README.md

@@ -0,0 +1,11 @@
+Account DocType represents an Accounting Ledger or Group.
+
+Follows a composite model. `parent_account` represents the parent of an Account except
+a root account.
+There can be only 4 root accounts: Income, Expense, Assets and Liabilities in a company.
+
+Other features:
+
+- It can be of type Debit or Credit.
+- A Group is a collection of groups or ledgers
+