Add .gitignore and .idea folder for GoLand (#111)

My IDE of choice is the JetBrains suite.

This PR adds the required ignores to make it clean.

For anyone who does not know GoLand, go try it out!

.gitignore

@@ -20,4 +20,20 @@ bin/
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
-build/*
+build/*
+
+# Covers JetBrains IDEs: GoLand, IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml