Add API docs for `code-runner` module

API-Documentation.md

@@ -1,6 +1,6 @@
 
 **Core**
-* code-runner
+* [code-runner](#code-runner)
 * console
 * core
 * engine
@@ -174,6 +174,43 @@ arguments:
 
 Returns a provider object that allows libraries to connect to the embark's blockchain node
 
+### code-runner
+
+module type: core component
+
+#### API
+
+##### requests
+
+name: 'runcode:register'
+arguments:
+  * varName {string} - name of the variable to be registered in the VM
+  * code {any} - primitive or object value that will be assign to `varName` inside the VM
+
+Registers a variable and assigns a value to it inside the VM context.
+
+name: 'runcode:whitelist'
+arguments:
+  * varName {string} - name of white node module to be whitelisted for imports inside the VM
+
+Whitelists a node module inside the VM context for imports. Generally, the VM context is
+sandboxed, making it impossible to require/import any arbitrary module. This API enables
+whitelisting of such modules.
+
+name : 'runcode:getContext'
+
+Returns the current VM context with its sandbox object and options.
+
+name: 'runcode:eval'
+arguments:
+  * code {string} - code to be eval'd inside the sandboxed VM
+  * cb {function} - callback to be called when the evaluation is done
+  * tolerateError {boolean}, default: false - If set to true, errors inside the VM are logged (instead of calling back with an error object)
+  * logCode {boolean}, default: true - log the code if it caused an error
+  * logError {boolean}, default: true - Also logs the error if there is one emitted by the VM
+
+Runs given code inside a sandboxed VM.
+
 ### communication
 
 module type: stack component