Adding documentation for go doc

doc.go

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+/*
+lyricdownloader is used to download lyrics for a song
+from the internet. There are two modes of operation.
+
+The first mode is scraping the lyrics from Google. So the operation is this:
+It first opens a chrome window, searches for the lyrics
+, and copies the lyrics returned by Google Search to a
+file defined by you.
+
+The second mode is getting the lyrics from Genius API. So the operation is this:
+It then tries to get search for the same song using the
+Genius API. It then tries to compare the lyrics with the
+Genius one.
+
+Usage:
+
+	lyricdownloader [flags]
+
+The flags are:
+
+	-configFile string
+		Optional. Use with genius
+	-genius
+	    Optional. Use genius
+	-google
+	    Optional. Use google.
+	-help
+	    Optional. Print Usage
+	-output string
+	    Optional. Lyrics filename
+	-search string
+	    Required. Name of song to search. If the name of the song is not a single word, put in quotes""
+	-verbose
+	    Optional. Turn on debug. Default is false.
+
+# Examples
+
+To download song Jireh using google
+
+	lyricdownloader -search "Jireh" -google
+
+To download song Jireh using genius
+
+	lyricdownloader -search "Jireh" -genius
+*/
+package main