Fix mark build variants in travis - comment on the same line instead of separate echo command. As echo is not executed in case of previous command failure.

.travis.yml

@@ -3,21 +3,17 @@ before_install:
   - sudo apt-get install -y ninja-build
 script:
   - bash -x test.sh
-  - bash -x build.sh
-  - echo "Default variant END"
+  - cp Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h Firmware/Configuration_prusa.h
+  - bash -x build.sh #1_75mm_MK3-EINSy10a-E3Dv6full variant
   - rm Firmware/Configuration_prusa.h
   - cp Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h Firmware/Configuration_prusa.h
-  - bash -x build.sh
-  - echo "1_75mm_MK25-RAMBo13a-E3Dv6full variant END"
+  - bash -x build.sh #1_75mm_MK25-RAMBo13a-E3Dv6full variant
   - rm Firmware/Configuration_prusa.h
   - cp Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h Firmware/Configuration_prusa.h
-  - bash -x build.sh
-  - echo "1_75mm_MK25-RAMBo10a-E3Dv6full variant END"
+  - bash -x build.sh #1_75mm_MK25-RAMBo10a-E3Dv6full variant
   - rm Firmware/Configuration_prusa.h
   - cp Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h Firmware/Configuration_prusa.h
-  - bash -x build.sh
-  - echo "1_75mm_MK2-RAMBo13a-E3Dv6full variant END"
+  - bash -x build.sh #1_75mm_MK2-RAMBo13a-E3Dv6full variant
   - rm Firmware/Configuration_prusa.h
   - cp Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h Firmware/Configuration_prusa.h
-  - bash -x build.sh
-  - echo "1_75mm_MK2-RAMBo10a-E3Dv6full variant END"
+  - bash -x build.sh #1_75mm_MK2-RAMBo10a-E3Dv6full variant