Simplifies build script

build.sh

@@ -1,23 +1,21 @@
 #!/bin/sh
 
 family=SourceSansPro
-romanWeights=('Black' 'Bold' 'ExtraLight' 'Light' 'Regular' 'Semibold')
-italicWeights=('BlackIt' 'BoldIt' 'ExtraLightIt' 'LightIt' 'It' 'SemiboldIt')
+romanWeights='Black Bold ExtraLight Light Regular Semibold'
+italicWeights='BlackIt BoldIt ExtraLightIt LightIt It SemiboldIt'
 
 # clean existing build artifacts
 rm -rf target/
-mkdir target/
-mkdir target/OTF/
-mkdir target/TTF/
+mkdir target/ target/OTF/ target/TTF/
 
-for w in ${romanWeights[@]};
+for w in $romanWeights
 do
   makeotf -f Roman/$w/font.ufo -r -o target/OTF/$family-$w.otf
   makeotf -f Roman/$w/font.ttf -r -o target/TTF/$family-$w.ttf
   rm Roman/$w/current.fpr # remove default options file from the source tree after building
 done
 
-for w in ${italicWeights[@]};
+for w in $italicWeights
 do
   makeotf -f Italic/$w/font.ufo -r -o target/OTF/$family-$w.otf
   makeotf -f Italic/$w/font.ttf -r -o target/TTF/$family-$w.ttf