old_contents: var hydra           = require('hydra'),
      HydraHeadStatic = hydra.heads.HydraHeadStatic,
      HydraHead       = hydra.heads.HydraHead;
  
  exports.getBodyParts = function(config, modules) {
      var assert = modules.assert;
  
      return {
          name: "testBasic",
          tests: {
              firstTestFoo: {
                  heads: [
                      new HydraHeadStatic({path: '/foo',
                                           content: "fixed content"}),
                      new HydraHeadStatic({content: "more fixed content"})
                  ]
              },
              secondTestBar: {
                  heads: [
                      new HydraHead({
                          path: '/bar',
                          handler: function(req, res) {
                              assert.equal(1, 1, "1 should be 1");
                              res.write("trying assertion...");
                              assert.equal(1, 0, "1 should be 0 (!)");
                              res.send("fixed content");
                          }
                      }),
                      new HydraHead({
                          path: '/bar2',
                          handler: function(req, res) {
                              assert.equal(1, 1, "1 should be 1 (still)");
                              res.send("always works");
                          }
                      })
                  ]
              }
          }
      };
  };
  
new_contents: var hydra           = require('hydra'),
      HydraHeadStatic = hydra.heads.HydraHeadStatic,
      HydraHead       = hydra.heads.HydraHead;
  
  exports.getBodyParts = function(config, modules) {
      var assert = modules.assert;
  
      return {
          name: "testBasic",
          tests: {
              firstTestFoo: {
                  heads: [
                      new HydraHeadStatic({path: '/foo',
                                           content: "fixed content"}),
                      new HydraHeadStatic({content: "more fixed content"})
                  ]
              },
  
              secondTestBar: {
                  instructions: "Optional, Markdown format instructions.\n\n" +
                                  "You can go to [/bar](/bar) for a failure, " +
                                  "or to [/bar2](/bar2) for a pass. Then go " +
                                  "back to " +
                                  "[/hydra-admin/tests](/hydra-admin/tests) " +
                                  "to see the results.",
  
                  heads: [
                      new HydraHead({
                          path: '/bar',
                          handler: function(req, res) {
                              assert.equal(1, 1, "1 should be 1");
                              res.write("trying assertion...");
                              assert.equal(1, 0, "1 should be 0 (!)");
                              res.send("fixed content");
                          }
                      }),
  
                      new HydraHead({
                          path: '/bar2',
                          handler: function(req, res) {
                              assert.equal(1, 1, "1 should be 1 (still)");
                              res.send("always works");
                          }
                      })
                  ]
              }
          }
      };
  };
  
subject: Add example of test instructions in sample plugin