Update URLParamEncoder.java

Update URLParamEncoder.java

[maven-release-plugin] copy for tag unirest-java-1.4.5

[maven-release-plugin] copy for tag unirest-java-1.4.4

[maven-release-plugin] copy for tag unirest-java-1.4.3

[maven-release-plugin] copy for tag unirest-java-1.4.2

[maven-release-plugin] copy for tag unirest-java-1.4.1

[maven-release-plugin] copy for tag unirest-java-1.4.0

[maven-release-plugin] copy for tag unirest-java-1.3.28

[maven-release-plugin] copy for tag unirest-java-1.3.27