InstagramRipperTest failure

[metaprime]

Sub issue of #374

Repro'd locally by running mvn test

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Test set: com.rarchives.ripme.tst.ripper.rippers.InstagramRipperTest
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Tests run: 3, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.068 sec <<< FAILURE!
testInstagramGID(com.rarchives.ripme.tst.ripper.rippers.InstagramRipperTest)  Time elapsed: 0.024 sec  <<< ERROR!
java.net.MalformedURLException: Unable to rip url: http://statigr.am/username
	at com.rarchives.ripme.ripper.AbstractRipper.<init>(AbstractRipper.java:70)
	at com.rarchives.ripme.ripper.AlbumRipper.<init>(AlbumRipper.java:23)
	at com.rarchives.ripme.ripper.AbstractJSONRipper.<init>(AbstractJSONRipper.java:19)
	at com.rarchives.ripme.ripper.rippers.InstagramRipper.<init>(InstagramRipper.java:26)
	at com.rarchives.ripme.tst.ripper.rippers.InstagramRipperTest.testInstagramGID(InstagramRipperTest.java:21)