Rename project

The project is now named mime-info-db. This drops Java from the name
and gives a more precise information on what this JAR is in directory of
libraries.

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch sonatype-oss-repo
# Changes to be committed:
#	modified:   README.md
#
# Untracked files:
#	src/test/java/io/derjan/mimeinfo/MimeDatabaseTest.java
#	src/test/resources/audio/
#	src/test/resources/text/
#