for each line, trim trailing/heading white spaces and tabs

[jo-chemla]

See #5

[zakjan]

Thanks for the PR. Can you add the exact test case from cpt-city which needs this trimming?

[jo-chemla]

Here are some CPTs, open-licence only according to cpt-view, which were breaking parsing without trimming, and for which parsing succeed when trimming.

I've added the cpt + jsons to the fixtures folder. Hope this helps and your PRs to chromajs also get merged!

    {
      "name": "wiki-knutux",
      "path": "cpt-city/wkp/knutux/wiki-knutux.cpt",
      "directory": "cpt-city/wkp/knutux",
      "content": "# knutux-lith.cpt\n#\n# elevation scheme for Lithuania taken from\n# http://fr.wikipedia.org/wiki/Fichier:LithuaniaPhysicalMap-Detailed.png\n# Author: Andrius Ramanauskas (User:Knutux), 2006\n# Licence: GFDL\n#\n# J.J. Green 2012\n# $Id\n#\n# COLOR_MODEL = RGB\n  0   74 173  90  40   74 173  90\n 40  116 195  83  80  116 195  83 \n 80  181 214  99 120  181 214  99 \n120  222 222  99 160  222 222  99 \n160  255 231  16 200  255 231  16 \n200  255 206   8 240  255 206   8 \n240  255 156   8 280  255 156   8 \n280  255 123  16 320  255 123  16 \nB   0    0   0\nF 255  255 123\nN 128  128 128\n",
      "license": "cc3",
      "distribute": "yes",
      "author": "Knutux (Andrius Ramanauskas)",
      "copyingFile": "cpt-city/wkp/knutux/COPYING.xml",
      "isOpenLicense": true
    },
    {
      "name": "bhw1_01",
      "path": "cpt-city/bhw/bhw1/bhw1_01.cpt",
      "directory": "cpt-city/bhw/bhw1",
      "content": "# cpt-city/bhw/bhw1/bhw1_01.cpt\n# autogenerated GMT palette \"bhw1\"\n# cptutils version 1.46, Wed Aug 15 23:37:37 2012\n# COLOR_MODEL = RGB\n  0 244 168  48  46 230  78  92\n 46 230  78  92 100 173  54 228\nB   0   0   0\nF 255 255 255\nN 255   0   0\n",
      "license": "cc3",
      "distribute": "yes",
      "author": "Blackheartedwolf",
      "copyingFile": "cpt-city/bhw/COPYING.xml",
      "isOpenLicense": true
    },
    {
      "name": "ETOPO1-Reed",
      "path": "cpt-city/ngdc/ETOPO1-Reed.cpt",
      "directory": "cpt-city/ngdc",
      "content": "# ETOP1-Reed Colour map for ETOPO1 \n#\n# Derived from the ETOPO1 map (Anderson, Varner\n# Lim) by Greg Reed of the Australian Ocean Data \n# Centre Joint Facility, converted to the cpt \n# format by J.J. Green.\n#\n# COLOR_MODEL = RGB\n-11000  16   6 180 -8000  16   6 180\n -8000   0  14 203 -6000   0  14 203 \n -6000  12  68 231 -4000  12  68 231\n -4000  21 158 252 -2000  21 158 252\n -2000  65 200 255 -1000  65 200 255\n -1000  94 223 255  -500  94 223 255\n  -500 138 227 255     0 138 227 255\n     0  51 102 \t 0   100   0  51 102\n   100  51 204 102   500  51 204 102\n   500 255 220 185  1000 255 220 185\n  1000 243 202 137  2000 243 202 137\n  2000 217 166  39  4000 217 166  39\n  4000 159 123  13  6000 159 123  13\n  6000 178 118 118  8500 178 118 118\n",
      "license": "gplv2",
      "distribute": "yes",
      "author": "Lester M. Anderson\n      CASP, UK",
      "copyingFile": "cpt-city/ngdc/COPYING.xml",
      "isOpenLicense": true
    },
    {
      "name": "Sunset_Real",
      "path": "cpt-city/nd/atmospheric/Sunset_Real.cpt",
      "directory": "cpt-city/nd/atmospheric",
      "content": "# cpt-city/nd/atmospheric/Sunset_Real.cpt\n# autogenerated GMT palette \"Atmospheric_Sunset_Real\"\n# cptutils version 1.46, Wed Aug 15 23:34:33 2012\n# COLOR_MODEL = RGB\n  0.00 191   0   0   8.85 223  85   0\n  8.85 223  85   0  20.37 255 170   0\n 20.37 255 170   0  33.39 217  85  89\n 33.39 217  85  89  53.26 178   0 178\n 53.26 178   0 178  77.77  89   0 195\n 77.77  89   0 195 100.00   0   0 212\nB   0   0   0\nF 255 255 255\nN 255   0   0\n",
      "license": "gpl",
      "distribute": "yes",
      "author": "Nevit Dilmen",
      "copyingFile": "cpt-city/nd/COPYING.xml",
      "isOpenLicense": true
    },