Add gitian PGP key: akx20000

Akira Takizawa · Akira Takizawa · commit b947d3811c94 · 2018-02-07T07:18:23.000+09:00
diff --git a/contrib/gitian-keys/keys.txt b/contrib/gitian-keys/keys.txt
@@ -1,3 +1,4 @@
+617C90010B3BD370B0AC7D424BB42E31C79111B8 Akira Takizawa
 152812300785C96444D3334D17565732E08E5E41 Andrew Chow
 E944AE667CF960B1004BC32FCA662BE18B877A60 Andreas Schildbach
 07DF3E57A548CCFB7530709189BBB8663E2E65CE Matt Corallo (BlueMatt)

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+617C90010B3BD370B0AC7D424BB42E31C79111B8 Akira Takizawa`
`1`	`2`	`152812300785C96444D3334D17565732E08E5E41 Andrew Chow`
`2`	`3`	`E944AE667CF960B1004BC32FCA662BE18B877A60 Andreas Schildbach`
`3`	`4`	`07DF3E57A548CCFB7530709189BBB8663E2E65CE Matt Corallo (BlueMatt)`