add benchmark showing improvement by moving from DSL to classes
add benchmark showing improvement by moving from DSL to classes

"x.should eq(5)" is over 200x faster using a class than the dsl in ruby
1.9.2, with similar results in other rubies

=========================================

3 runs of 1000 times for each example running ruby/1.8.7
passing examples: 5.should eq(5)
* using the DSL
  0.340000   0.000000   0.340000 (  0.342052)
  0.330000   0.010000   0.340000 (  0.340618)
  0.340000   0.000000   0.340000 (  0.339149)

* using a class
  0.000000   0.000000   0.000000 (  0.003762)
  0.010000   0.000000   0.010000 (  0.004192)
  0.000000   0.000000   0.000000 (  0.003791)

failing examples: 5.should eq(3)
* using the DSL
  0.380000   0.000000   0.380000 (  0.384415)
  0.380000   0.010000   0.390000 (  0.381604)
  0.370000   0.000000   0.370000 (  0.380255)

* using a class
  0.040000   0.000000   0.040000 (  0.034528)
  0.030000   0.000000   0.030000 (  0.032021)
  0.060000   0.010000   0.070000 (  0.067579)

3 runs of 1000 times for each example running ruby/1.9.2
passing examples: 5.should eq(5)
* using the DSL
  0.250000   0.010000   0.260000 (  0.249692)
  0.250000   0.000000   0.250000 (  0.253856)
  0.230000   0.000000   0.230000 (  0.232787)

* using a class
  0.000000   0.000000   0.000000 (  0.001069)
  0.000000   0.000000   0.000000 (  0.001041)
  0.000000   0.000000   0.000000 (  0.001023)

failing examples: 5.should eq(3)
* using the DSL
  0.370000   0.000000   0.370000 (  0.377139)
  0.360000   0.010000   0.370000 (  0.358379)
  0.370000   0.000000   0.370000 (  0.373795)

* using a class
  0.060000   0.010000   0.070000 (  0.073325)
  0.050000   0.000000   0.050000 (  0.053562)
  0.070000   0.000000   0.070000 (  0.075382)

3 runs of 1000 times for each example running ruby/1.9.3
passing examples: 5.should eq(5)
* using the DSL
    0.210000   0.000000   0.210000 (  0.219539)
   0.220000   0.010000   0.230000 (  0.217905)
   0.220000   0.000000   0.220000 (  0.219657)

* using a class
    0.000000   0.000000   0.000000 (  0.001054)
   0.000000   0.000000   0.000000 (  0.001048)
   0.000000   0.000000   0.000000 (  0.001035)

failing examples: 5.should eq(3)
* using the DSL
    0.350000   0.000000   0.350000 (  0.351742)
   0.360000   0.000000   0.360000 (  0.362456)
   0.340000   0.010000   0.350000 (  0.351098)

* using a class
    0.080000   0.000000   0.080000 (  0.079964)
   0.080000   0.000000   0.080000 (  0.076579)
   0.070000   0.000000   0.070000 (  0.080587)

3 runs of 1000 times for each example running rbx/1.8.7
passing examples: 5.should eq(5)
* using the DSL
  1.926107   0.009784   1.935891 (  1.629354)
  0.583860   0.004390   0.588250 (  0.580396)
  0.868571   0.003510   0.872081 (  0.796644)

* using a class
  0.002652   0.000013   0.002665 (  0.002679)
  0.001845   0.000016   0.001861 (  0.001848)
  0.002656   0.000010   0.002666 (  0.001823)

failing examples: 5.should eq(3)
* using the DSL
  0.694148   0.002006   0.696154 (  0.648551)
  1.063773   0.004653   1.068426 (  0.998837)
  0.643594   0.001356   0.644950 (  0.638358)

* using a class
  0.020139   0.000036   0.020175 (  0.020161)
  0.097540   0.000575   0.098115 (  0.084680)
  0.058366   0.000269   0.058635 (  0.044372)

3 runs of 1000 times for each example running jruby/1.8.7
passing examples: 5.should eq(5)
* using the DSL
  0.355000   0.000000   0.355000 (  0.355000)
  0.261000   0.000000   0.261000 (  0.261000)
  0.242000   0.000000   0.242000 (  0.242000)

* using a class
  0.007000   0.000000   0.007000 (  0.007000)
  0.004000   0.000000   0.004000 (  0.004000)
  0.001000   0.000000   0.001000 (  0.001000)

failing examples: 5.should eq(3)
* using the DSL
  0.507000   0.000000   0.507000 (  0.507000)
  0.468000   0.000000   0.468000 (  0.468000)
  0.476000   0.000000   0.476000 (  0.476000)

* using a class
  0.259000   0.000000   0.259000 (  0.259000)
  0.521000   0.000000   0.521000 (  0.521000)
  0.244000   0.000000   0.244000 (  0.244000)

AEgan/rspec-expectations,jamelablack/rspec-expectations,bjpcjp/rspec-expectations,unmanbearpig/rspec-expectations,rspec/rspec-expectations,sferik/rspec-expectations,alexaltair/rspec-expectations,dg-ratiodata/rspec-expectations,h4ck3rm1k3/rspec-expectations,jamelablack/rspec-expectations,h4ck3rm1k3/rspec-expectations,jasonkarns/rspec-expectations,maclover7/rspec-expectations,rspec/rspec-expectations,zsyed91/rspec-expectations,bjpcjp/rspec-expectations,danielfone/rspec-expectations,maclover7/rspec-expectations,yaoshipu/rspec-expectations,jdax/rspec-expectations,AEgan/rspec-expectations,jdax/rspec-expectations,edwardpark/rspec-expectations,unmanbearpig/rspec-expectations,sferik/rspec-expectations,jasonkarns/rspec-expectations,edwardpark/rspec-expectations,alexaltair/rspec-expectations,emilyforst/rspec-expectations,zsyed91/rspec-expectations,chrisarcand/rspec-expectations,chrisarcand/rspec-expectations,emilyforst/rspec-expectations,dg-ratiodata/rspec-expectations,danielfone/rspec-expectations,yaoshipu/rspec-expectations