Add TravisCI and update Kotlin to 1.1.4 (fix issue with kotlin package)

[galuszkak]

Fixing issues like:

[ERROR] /Users/galuszkak/PycharmProjects/kotlin-jdbc/src/main/kotlin/kotlin/jdbc/Connections.kt:[1,1] Only the Kotlin standard library is allowed to use the 'kotlin' package

and

[WARNING] 'version' contains an expression but should be a constant. @ org.jetbrains.kotlin:kotlin-jdbc:${kotlin.version}, /Users/galuszkak/PycharmProjects/kotlin-jdbc/pom.xml, line 10, column 14
[WARNING]```