Added attribution to Electrum for their word-lists

src/mnemonics/electrum-words.cpp

@@ -94,6 +94,11 @@ namespace
     std::string word;
     while (input_stream >> word)
     {
+      if (word.length() == 0 || word[0] == '#')
+      {
+        // Skip empty and comment lines
+        continue;
+      }
       words_array.push_back(word);
       if (has_checksum)
       {

src/mnemonics/wordlists/languages/english

@@ -1,3 +1,4 @@
+# Originally created as part of the Electrum project, Copyright (C) 2014 Thomas Voegtlin
 abandon
 ability
 able

src/mnemonics/wordlists/languages/japanese

@@ -1,3 +1,4 @@
+# Originally created as part of the Electrum project, Copyright (C) 2014 Thomas Voegtlin
 あい
 あいこくしん
 あう

src/mnemonics/wordlists/languages/spanish

@@ -1,3 +1,4 @@
+# Originally created as part of the Electrum project, Copyright (C) 2014 Thomas Voegtlin
 ábaco
 abdomen
 abeja