docs: update README, CHANGELOG, config examples, and add mock slurmrestd server

Author: wettowelreactor

CHANGELOG.md

@@ -10,6 +10,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 <small>[Compare with latest](https://github.com/awslabs/open-resource-broker/compare/v0.1.0rc0...HEAD)</small>
 
+### Added
+
+- SLURM scheduler integration — ORB can now act as a resource provider for SLURM clusters via ResumeProgram/SuspendProgram power management hooks (dynamic slot model with batch provisioning)
+- SlurmSchedulerStrategy with full SchedulerPort implementation and batch resume/suspend handlers
+- Bidirectional field mapping between SLURM and ORB domain concepts
+- SlurmNodeMapper for node name ↔ machine ID translation with hostlist range expansion
+- slurmrestd REST client for cluster health monitoring
+- CLI fallback adapter for environments without slurmrestd
+- Mock slurmrestd server for local development and testing
+- Comprehensive documentation: integration guide, deployment scenarios, feature mapping, supported APIs
+
 ### Features
 
 - integrate comprehensive release management and notes enhancements ([207203b](https://github.com/awslabs/open-resource-broker/commit/207203b414f2649e68a80711d281f656e723c2a1) by Flamur Gogolli).

ORB.gif

@@ -40,8 +40,11 @@ Built for AWS today (EC2, Auto Scaling Groups, SpotFleet, EC2Fleet), with an ext
 
 **Scheduler support:**
 - **HostFactory** — runs as an [IBM Spectrum Symphony provider plugin](#hostfactory-integration)
+- **SLURM** — integrates with SLURM workload manager via ResumeProgram/SuspendProgram power hooks
 - **Standalone** — direct usage without an external scheduler
 
+![ORB](./ORB.gif)
+
 ## Quick Start
 
 ```bash

README.md

@@ -2,7 +2,13 @@
   "version": "2.0.0",
   "scheduler": {
     "type": "hostfactory",
-    "config_root": "$HF_PROVIDER_CONFDIR"
+    "config_root": "$HF_PROVIDER_CONFDIR",
+    "_comment_scheduler_alternatives": "Alternatives: type='default' (standalone), type='slurm' (SLURM power hooks)",
+    "_slurm_example": {
+      "type": "slurm",
+      "config_root": "/etc/orb",
+      "log_level": "INFO"
+    }
   },
   "provider": {
     "providers": [