Update binary download links

Author: kimwalisch

README.md

@@ -17,8 +17,8 @@ Below are the latest precompiled binaries for Windows 64-bit and Linux x64.
 These binaries are statically linked and require a CPU which supports the
 POPCNT instruction (2010 or later).
 
-* [primesum-1.1-win64.zip](https://github.com/kimwalisch/primesum/releases/download/v1.1/primesum-1.1-win64.zip), 382 KB
-* [primesum-1.1-linux-x64.tar.gz](https://github.com/kimwalisch/primesum/releases/download/v1.1/primesum-1.1-linux-x64.tar.gz), 894 KB
+* [primesum-1.2-win64.zip](https://github.com/kimwalisch/primesum/releases/download/v1.2/primesum-1.2-win64.zip), 392 KB
+* [primesum-1.2-linux-x64.tar.gz](https://github.com/kimwalisch/primesum/releases/download/v1.2/primesum-1.2-linux-x64.tar.gz), 1 MB
 
 256-bit binaries
 ----------------
@@ -28,8 +28,8 @@ it runs about 30% slower than the 128-bit primesum version due to slower
 256-bit integer arithmetic. primesum 256-bit has already been used to
 compute many new prime sum world records!
 
-* [primesum-1.1-256-win64.zip](https://github.com/kimwalisch/primesum/releases/download/v1.1-256-bit/primesum-1.1-256-win64.zip), 498 KB
-* [primesum-1.1-256-linux-x64.tar.gz](https://github.com/kimwalisch/primesum/releases/download/v1.1-256-bit/primesum-1.1-256-linux-x64.tar.gz), 1005 KB
+* [primesum-1.2-256-win64.zip](https://github.com/kimwalisch/primesum/releases/download/v1.2-256-bit/primesum-1.2-256-win64.zip), 407 KB
+* [primesum-1.2-256-linux-x64.tar.gz](https://github.com/kimwalisch/primesum/releases/download/v1.2-256-bit/primesum-1.2-256-linux-x64.tar.gz), 1 MB
 
 Build instructions
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