Added some instructions related to PGP signing.
Added some instructions related to PGP signing.

habibmasuro/omniwallet,habibmasuro/omniwallet,VukDukic/omniwallet,ripper234/omniwallet,ripper234/omniwallet,VukDukic/omniwallet,dexX7/omniwallet,achamely/omniwallet,VukDukic/omniwallet,OmniLayer/omniwallet,Nevtep/omniwallet,arowser/omniwallet,ripper234/omniwallet,habibmasuro/omniwallet,arowser/omniwallet,Nevtep/omniwallet,OmniLayer/omniwallet,OmniLayer/omniwallet,dexX7/omniwallet,habibmasuro/omniwallet,arowser/omniwallet,dexX7/omniwallet,OmniLayer/omniwallet,Nevtep/omniwallet,achamely/omniwallet,achamely/omniwallet,Nevtep/omniwallet,achamely/omniwallet