Added some new tests for cases that fail.

[keskival]

These cases are not correctly processed.

[jfromaniello]

Thanks and sorry for the delay. I published this as url-join@2.0.3.

[jfromaniello]

Heads up.. I had to rever this PR because it breaks other stuff and usage, oops Sorry!.

Master has the tests you added with .skip because I still think is important to solve these

[keskival]

Thanks anyway! The problems are because my heuristics assume the first part should contain the protocol part, and detects that with ":". One way to fix is to add a condition of no slashes or colons before the assumed protocol colon.
All this is a bit ambiguous, because what we are doing is basically applying heuristics to fix malformed parameters. One thing we must not do is to modify legal URLs. There should be a larger set of tests to make sure legal inputs are not being modified, but are simply concatenated.

[keskival]

@jfromaniello : Fixed the discovered issue here: #35