50, 93, 121 readme

README.md

@@ -53,7 +53,7 @@ Current status:
 - [ ] 47. median
 - [x] 48. is_palindrome
 - [x] 49. modp
-- [ ] 50. encode_shift
+- [x] 50. encode_shift
 - [x] 51. remove_vowels
 - [x] 52. below_threshold
 - [x] 53. add
@@ -96,7 +96,7 @@ Current status:
 - [ ] 90. next_smallest
 - [ ] 91. is_bored
 - [x] 92. any_int
-- [ ] 93. encode
+- [x] 93. encode
 - [ ] 94. skjkasdkd
 - [ ] 95. check_dict_case
 - [x] 96. count_up_to
@@ -124,7 +124,7 @@ Current status:
 - [x] 118. get_closest_vowel
 - [ ] 119. match_parens
 - [ ] 120. maximum
-- [ ] 121. solution
+- [x] 121. solution
 - [x] 122. add_elements
 - [x] 123. get_odd_collatz
 - [ ] 124. valid_date