add dev plan

.gitignore

@@ -24,3 +24,5 @@ hs_err_pid*
 .idea/
 .DS_Store
 *.iml
+
+pub/

README.md

@@ -1,2 +1,50 @@
 # pard
 Parallel Database Running like a Leopard
+
+## Development Plan
+#### First Round (11.15)
+1. SQL Parser
+2. Catalog
+3. Operator Set
+4. Connector Interface
+5. Storage Manager Interface
+6. Task Interface
+7. NodeKeeper Interface
+
+#### Second Round (11.30)
+1. Communication
+2. Optimizer Framework
+3. Connector
+4. Catalog
+5. Planner and Scheduler Framework
+
+#### Third Round (12.30)
+1. Optimizer Cost Model
+2. Executor
+3. Storage Manager
+4. NodeKeeper
+5. Job Execution Pipeline
+
+## Contribution Guide
+#### Recommended Environment
+Git + Intellij IDEA + Java8 + Maven3.3.9+
+#### Compilation Without Running Unit Tests
+`mvn clean package -DskipTests` or `mvn clean compile -DskipTests`
+#### Compilation With Running Unit Tests
+`mvn clean package` or `mvn clean compile`
+
+#### Tips
+1. Compile locally to ensure everything is ok before pushing to Github.
+2. Pay attention to CheckStyle. Make sure your code style satisfies the code style rules.
+
+## Code Style Rules
+#### SPACE
+#### IF-ELSE
+#### FOR-LOOP
+#### TRY-CATCH
+#### FUNCTION
+#### CLASS/INTERFACE
+#### COMMENT
+#### IMPORTS
+#### VARIABLES AND CONSTANTS
+#### NAMING CONVENTION