Update libsodium URL on Travis
Update libsodium URL on Travis

joshjdevl/kalium-jni,lukin0110/kalium,joshjdevl/kalium-jni,vshaipov/kalium,f24-ag/kalium-jni,andresgalante/kalium,abstractj/kalium,joshjdevl/kalium-jni,tml/kalium,abstractj/kalium,f24-ag/kalium-jni