Fix Benchmark scripts

[boopathi]

• (fix Readme benchmarks #465)

Outputs:

Benchmark Results for react.js:
Input Size: 124.7kB
Input Size (gzip): 29.82kB

minifier          | output raw | raw win | gzip output | gzip win | parse time (ms) | minify time (ms)
babili            | 36.13kB    | 71%     | 12.6kB      | 58%      | 2.41            | 1862.94
uglify            | 35.73kB    | 71%     | 11.96kB     | 60%      | 2.32            | 820.07
closureCompiler   | 34.77kB    | 72%     | 11.96kB     | 60%      | 2.99            | 3388.90
closureCompilerJs | 65.41kB    | 48%     | 15.83kB     | 47%      | 3.00            | 1067.18

Benchmark Results for vue.js:
Input Size: 234.23kB
Input Size (gzip): 64.53kB

minifier          | output raw | raw win | gzip output | gzip win | parse time (ms) | minify time (ms)
babili            | 96.41kB    | 59%     | 34.55kB     | 46%      | 6.52            | 5632.69
uglify            | 88.9kB     | 62%     | 32.77kB     | 49%      | 6.43            | 1545.96
closureCompiler   | 86.94kB    | 63%     | 32.75kB     | 49%      | 7.00            | 6270.67
closureCompilerJs | 90.09kB    | 62%     | 33.67kB     | 48%      | 6.35            | 10337.66

Benchmark Results for jquery.js:
Input Size: 260.93kB
Input Size (gzip): 77.2kB

minifier          | output raw | raw win | gzip output | gzip win | parse time (ms) | minify time (ms)
babili            | 93.83kB    | 64%     | 32.1kB      | 58%      | 7.13            | 4851.06
uglify            | 84.92kB    | 67%     | 29.65kB     | 62%      | 6.47            | 1534.45
closureCompiler   | 85.7kB     | 67%     | 30.47kB     | 61%      | 7.55            | 6426.35
closureCompilerJs | 87.42kB    | 66%     | 31.13kB     | 60%      | 7.89            | 6563.06

Benchmark Results for jquery.flot.js:
Input Size: 107.43kB
Input Size (gzip): 23.91kB

minifier          | output raw | raw win | gzip output | gzip win | parse time (ms) | minify time (ms)
babili            | 36kB       | 66%     | 12.34kB     | 48%      | 2.61            | 1428.70
uglify            | 32.78kB    | 69%     | 11.54kB     | 52%      | 2.94            | 653.10
closureCompiler   | 31.91kB    | 70%     | 11.61kB     | 51%      | 2.55            | 3888.49
closureCompilerJs | 33.25kB    | 69%     | 12.08kB     | 49%      | 2.55            | 3627.37

Benchmark Results for three.js:
Input Size: 1002.36kB
Input Size (gzip): 199.96kB

minifier          | output raw | raw win | gzip output | gzip win | parse time (ms) | minify time (ms)
babili            | 526.27kB   | 47%     | 130.08kB    | 35%      | 31.33           | 15603.97
uglify            | 496.16kB   | 51%     | 123.99kB    | 38%      | 29.41           | 5200.65
closureCompiler   | 491.56kB   | 51%     | 124.93kB    | 38%      | 30.75           | 12573.82
closureCompilerJs | 499.81kB   | 50%     | 126.02kB    | 37%      | 28.13           | 73685.37