Added WASM build source files, progress toward publishing to NPM via Travis CI

[darrenldl]

No description provided.

[coveralls]

Coverage decreased (-0.02%) to 96.279% when pulling 0be0d40 on wasm into 3b44858 on master.

[coveralls]

Coverage decreased (-0.02%) to 96.279% when pulling 0be0d40 on wasm into 3b44858 on master.

[codecov]

Codecov Report

Merging #72 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #72      +/-   ##
==========================================
- Coverage   96.31%   96.27%   -0.04%     
==========================================
  Files          10       10              
  Lines        2930     2928       -2     
==========================================
- Hits         2822     2819       -3     
- Misses        108      109       +1

Impacted Files	Coverage Δ
src/core.rs	97.12% <0%> (-0.36%)	⬇️
src/matrix.rs	98.72% <0%> (-0.02%)	⬇️

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