Add API docs for `contracts-manager`

API-Documentation.md

@@ -16,7 +16,7 @@
 * [blockchain](#blockchain)
 * [communication](#communication)
 * compiler
-* contracts-manager
+* [contracts-manager](#contracts-manger)
 * [deployment](#deployment)
 * embarkjs
 * [library-manager](#library-manager)
@@ -416,6 +416,66 @@ module type: plugin component
   * instantiates contracts in vanilla web3
   * overrides require to return specified contracts
 
+### contracts-manager
+
+module type: stack component
+
+#### API
+
+##### requests
+
+name: `contracts:reset`
+
+Resets the internal contracts memory.
+
+name: `contracts:build`
+arguments:
+
+* `contractsConfig` - ContractsConfig - Smart Contract configuration object
+* `compiledContracts` - CompiledContracts - Map of compiled Smart Contract objects
+
+Builds `Contract` objects from `contractsConfig` and `compiledContracts`.
+
+name: `contracts:list`
+
+Returns a list of built contracts.
+
+name: `contracts:state`
+
+Returns messages that describe the deployment state of each individual Smart Contract.
+
+name: `contracts:contract`
+arguments:
+
+* `contractsName` - string - Name of contract to be returned
+
+Returns a `Contract` by given `contractsName`
+
+name: `contracts:add`
+arguments:
+
+* `contract` - `ContractConfig` - Configuration of single Smart Contract
+
+Creates a `Contract` from `contract` and adds it to internal contract memory.
+
+name: `contracts:all`
+
+Returns list of Smart Contracts from internal contract memory.
+
+name: `contracts:dependencies`
+
+Returns contracts dependencies mapping based on currently compiled contracts (requires `contract:build` to be run first)
+
+name: `contracts:contract:byTxHash`
+arguments:
+
+* `txHash` - string - A transaction hash
+
+Returns a `Contract` by given hash.
+
+name: `contracts:reset:dependencies`
+
+Resets internal dependencies mapping.
 ### deployment
 
 module type: stack component