Update pipeline version info (#693)

docs/pipelines/pipelines.md

@@ -105,10 +105,9 @@ when rerun, the pipeline DAG will be generated from the pipeline configuration s
 lets you modify the pipeline configuration via the UI, without changing the original codebase.
 
 ### Pipeline Versions
-Each pipeline must be assigned a version number to help track the evolution of your pipeline structure and parameters.
-
-If you pass `auto_version_bump=True` when instantiating a PipelineController, the pipeline's version automatically bumps up
-if there is a change in the pipeline code. If there is no change, the pipeline retains its version number.  
+You can assign each pipeline a version number to help track the evolution of your pipeline structure and parameters. 
+The pipeline's version automatically bumps up if there is a change in the pipeline code. If there is no change, the 
+pipeline retains its version number.  
 
 ### Tracking Pipeline Progress
 ClearML automatically tracks a pipeline's progress percentage: the number of pipeline steps completed out of the total

docs/pipelines/pipelines_sdk_function_decorators.md

@@ -39,8 +39,8 @@ def main(pickle_url, mock_parameter='mock'):
 
 * `name` - The name for the pipeline controller task
 * `project` - The ClearML project where the pipeline controller task is stored
-* `version` - Numbered version string (e.g. 1.2.3). If `auto_version_bump` is set to `True`, the version number is 
-  automatically bumped if the same version already exists and the pipeline code has changed
+* `version` - Numbered version string (e.g. `1.2.3`). If not set, find the pipeline's latest version and increment 
+  it. If no such version is found, defaults to `1.0.0` 
 * `default_queue` - The default [ClearML Queue](../fundamentals/agents_and_queues.md#what-is-a-queue) in which to enqueue all pipeline steps (unless otherwise specified in the pipeline step).
 * `args_map` - Map arguments to their [configuration section](../fundamentals/hyperparameters.md#webapp-interface) in 
   the following format: `{'section_name':['param_name']]}`. For example, the pipeline in the code above will store the 

docs/pipelines/pipelines_sdk_tasks.md

@@ -15,8 +15,8 @@ pipe = PipelineController(
 
 * `name` - The name for the pipeline controller task
 * `project` - The ClearML project where the pipeline tasks will be created.
-* `version` - Numbered version string (`e.g. 1.2.3`). When `auto_version_bump` is set to `True`, the version number will 
-  be automatically bumped if the same version already exists and the code has changed
+* `version` - Numbered version string (e.g. `1.2.3`). If not set, find the pipeline's latest version and increment 
+  it. If no such version is found, defaults to `1.0.0` 
 
 See [PipelineController](../references/sdk/automation_controller_pipelinecontroller.md) for all arguments.